||The examples and perspective in this article deal primarily with Germany and do not represent a worldwide view of the subject. (October 2013) (Learn how and when to remove this template message)|
Silver overlay is an electroplated coating of silver on a non-conductive surface such as porcelain or glass.
Friedrich Deusch, the inventor of German silver overlay, was born in 1855 in Pforzheim. In 1895, he was working in Berlin and began his first experiments exploring methods of fusing precious metals to glass and porcelain. In 1907, his experiments had paid off and won him prestigious awards at an exhibition in Bordeaux.
Deusch returned to Schwäbisch Gmünd in southern Germany where, in 1912, he founded his firm Deusch & Co. Deusch continued exhibiting his wares and gained the Gold Medal at the 1913 World Exposition in Ghent, Belgium.
With his presence, Schwäbisch Gmünd became the center of German silver overlay production. Schwäbisch Gmünd (about 20,000 inhabitants in that time) had a long tradition since the 16th century in the art of artists working with gold and silver. A school for applied arts existed there from an early date, which became a school for the precious metal industry in 1907. In the 1920s almost 190 firms were involved in the precious metals industry. The presence of materials, artisans, and component suppliers in on place created an ideal environment for the industry to thrive.
Parallel to the development of German silver overlay, silver overlay production was also initiatied in the United States.
The specific feature of German silver overlay is the degree of purity – 925 for Sterling silver or 999 for fine silver. The quality of silver used for German overlay can be seen by identifying the impressed 1000 mark (usually on the base or side of an item). The purity and thickness of the silver overlay ensures the beauty of the item is maintained without any loss to the silver even after many years of cleaning. This cannot be said for some of the so-called silver overlay pieces seen on the market today. Bohemian and Venetian Murano glass are often described as silver overlay, but the silver is so thin that it looks as though it has been painted onto the surface, producing a flat effect.
Friedrich Deusch invented a way to combine silver and a non-conductive surface such as porcelain or glass with galvanization. He achieved this with a special conductive fluid (a type of flux) which was fixed permanently on the prepared form. The particular objects (such as a vase) were first roughened by engraving or using hydrofluoric acid to etch a design. This implies that a very exact covering of the surfaces had to be achieved to prevent any damage to areas which were not to be overlaid. Maybe they used a masking lacquer which could withstand the following baking in the kiln which was used to fuse the flux with the surface of the item. The next step was to galvanize the item with the purest silver (1000).
It was very important to monitor items being overlaid with silver – waiting too long resulted in visible dark spots and slight roughness where the cathode or anode were fixed. The cathode and anode were used to charge the item electronically and this allowed the fusion of silver to the area painted with the silver flux. The thickness of silver desired on the finished item determined how long the item needed to be left in the silver bath; this could be more than 30 hours. Finally, if the masking lacquer (discussed earlier) did not burn in the kiln, it must have been removed later (probably with chemical fluids).
When colored enamels were to be used on the finished product, they had to be fired prior to the final stage of the silver overlay process. Engraving the silver was the last, and sometimes most laborious, work; it was brought to the highest level by Friedrich Wilhelm Spahr and his workers.
Early items designed and produced by Friedrich Deusch are very classical, and this was followed by an abstract phase of Art Déco in its purest form. From the 1950s, it was more a concrete style with flowers and so forth. Deusch applied silver ovelay to vases, plates, coffee and tea services, and other items.
From the outset, the firm of Alfred Veyhl had its own style. It was mostly the combination of polychromatic painted details of birds, flowers, and similar motifs, framed with silver. The more abstract designs are rare. Alfred, and later his son Manfred Veyhl, were the only ones who used a varnish to avoid silver oxidation. Alfred used more softer and rounder lines in his designs, whereas Manfred had a more angular, expressive style. A specialty for this company was that clients could choose from a certain range of porcelain forms and décors. The items were then produced exclusively in a single production run.
An outstanding figure is Friedrich Wilhelm Spahr. There is evidence that he learned his skill from Friedrich Deusch (some items of both firms have very similar formal designs). He was not only an artisan but an artist in developing repeating circumferential forms in a perfect and harmonic proportion. Very often it is the pure arrangement of lines (curved or straight), or their combination, with flowers or birds. Never over-designed, but enough to divide the small surface (for example of a vase) in a self-evident and harmonious way. Like the others, not only did he design and apply the silver overlay, he also prepared the porcelain with his own enamel colors, painted the motifs and engraved the silver. Of course he did not produce all these items by himself. Spahr's factory employed about forty specialized workers. The outstanding engraved pieces show the unrivaled quality of Spahr.
The early items typically have a thicker silver layer. One can also see the stroke of the brush which proves the overlay and painted surface were handcrafted. Printed designs were used more often on items produced later, especially those of Manfred Vehyl. These can be recognized by studying the design: if the color is flat and full of small dots, this strongly indicates a printed design. Also, the silver work on printed color designs appears not to cover the design closely, as it should.
The three companies bought and used porcelain blanks from several well known producers such as Rosenthal, Hutschenreuther, Thomas Bavaria, Krautheim & Adelberg and marketed the finished products under their own names. They also produced silver overlay glass in the same manner. A large amount of glassware came from WMF in Geislingen, which is not far from Schwäbisch Gmünd. A respectable amount of glass to be overlaid also came from Jean Beck, a famous glass designer in Munich. Until recently, it was believed that Beck created the brilliant silver designs himself and that Deusch only produced them. However, this was not the case. As with the porcelain, Deusch and others bought the delightfully stylized glass blanks, decorated them in silver overlay, and sold them under their own names.
Friedrich Deusch used the impressed mark "Deusch 1000 / 1000" on the early items. This mark was punched directly into the silver. Very often one may also find a red three-digit number on the bottom of the porcelain or glass which indicates this early production. Later, it was replaced by a red stamp which shows a coffeepot and the name Deusch. In addition, to these marks, the following marks may also be found: "1000 / 1000 Silber" or "1000 / 1000 Feinsilber". Later items may have the additional mark "Made in Western Germany".
Alfred and Manfred Veyhl used many different marks, stamps and labels (always placed on the bottom of the item). Vehyl's work often shows the "1000/1000 silver" mark included in the body of the design. Some rare items are signed by handwritten monogram (MV for Manfred Veyhl) and the word "Handgemalt" (handpainted).
Friedrich Wilhelm Spahr mostly used marks impressed directly into the silver. The very earliest and rarest of Spahr's marks began with "MSG 1000 10" ("MSG" standing for "Manufaktur Schwäbisch Gmünd"). This mark was followed by "Spahr 1000 10" (sometimes stamped in black letters on a porcelain base), later with "Spahr 1000", and finally with transparent plastic labels on the bottom printed "Spahr Feinsilberauflage 1000 / 1000".
Sales and Distribution
These luxurious products were most often sold in important jewellery stores. Sometimes the retailer's paper labels survived the cleaning attempts of the last decades, and these labels are always a keen addition for any collector. They confirm that silver overlay porcelain and glass was sold all over Germany.
Friedrich Deusch, the oldest and biggest firm, also sold internationally and even produced a large amount of silver overlay tableware for the Royal House of Saudi Arabia. Deusch is the only firm that has survived (as of 2013), although the focus of production has changed from fine art to galvanizing parts for the automobile industry. In 1976, after three generations, the Deusch family relinquished interest in the firm of Friedrich Deusch and Company Today, there is scant knowledge and interest about this firm's history.
Veyhl (father and son) traveled a lot offering their newest items to different jewellery stores. Later, they opened their own shop in Plüderhausen (close to Schwäbisch Gmünd). Friedrich Wilhelm Spahr created timeless designs which can be found today all over Europe and even in the United States. These are rare, desirable and mostly exquisite.
Silver overlay was a very exclusive luxury ware from the beginning because of the very complicated and time-consuming steps of manufacturing. Silver overlay items were never mass-produced and were made in limited numbers. The development of silver overlay was forged by a technical alliance between artists, artisans and advances in chemistry, physics, electronics and, ultimately, the industrialized techniques of the late 19th century. The arts movements of the day were philosophically against industrialized techniques. Yet, ironically, many delightfully decorated pieces of silver overlay porcelain and glass can be seen with superb handicraft and Art Nouveau-inspired designs. Thus, while the handicraft movement died after a single incandescent generation, their designs live on, as do the stunning works of Friedrich Deusch, Friedrich Wilhelm Spahr, and Alfred & Manfred Vehyl.
- Otto F. Götz, "Jean Beck/part2 - WMF und Deusch" (in German), Sammlerjournal pages 38 – 45
- Otto F. Götz, "Beck und Poschinger" (in German), Sammlerjournal page 27
- Monika Boosen; Gabriele Holthuis (2010) (in German), Aufbruch in die Moderne - Silber aus Schwäbisch Gmünd, Schwäbisch Gmünd, ISBN 978-3-936988-17-8
- Carlo Burschel; Heinz Scheiffel (2006) (in German), WMF Ikora Metall, Stuttgart: Arnold, ISBN 3-89790-191-9
-  Otto F. Götz about Silver overlay on Glass of Jean Beck
- Collectors journal (Sammlerjournal) of 2009, pages 38 – 45.
-  Article about other inventors of Silver overlay on glass and porcelain like Oscar Pierre Erard of Birmingham or the American John H. Scharling
|Wikimedia Commons has media related to Silver overlay.|
- Boosen, Monika; Holthuis, Gabriele, "Aufbruch in die Moderne - Silber aus Schwäbisch Gmünd" [Dawn of Modern Art - Silver from Schwäbisch Gmünd], Catalog, Schwäbisch Gmünd, Germany: Museum am Prediger - Schwäbisch Gmünd, p. 40 and 82 (German)
- "Metallporzellenfabrik Deusch & Co." (PDF). Deusch and Company. p. 2. Retrieved October 3, 2013. (German)
- "Die Gold- und Silberstadt Schwäbisch Gmünd" [The gold and silver of Schwäbisch Gmünd]. Schwäbisch Gmünd town website. Retrieved October 3, 2013. (German)
- "Silver Overlay Glass". A Small Collection of Antique Silver and Objects of Vertu. Giorgio Busetto. Retrieved October 3, 2013.
- "German silver Details". Saturday, 3 June 2017
- Spahr and Jean Beck. "Silver overlay on Glass" (PDF). Archived from the original (PDF) on November 2, 2014.
- Toth, Josef; Stegmaier, Karlheinz; Wannenwetsch, Walter (2008), Urbacher Silber - Silberporzellanmanufaktur Veyhl Urbach / Plüderhausen [Urbacher Silver - Silver Porcelain Manufactory Veyhl Urbach / Pluederhausen], Urbach, Germany: Museum am Widumhof(German)
- "Die WMF wächst - von Württemberg in die Welt" [WMF grows: from Württemberg to the world] (PDF). WMF. worl=150 Years of WMF. Retrieved October 3, 2013. Check date values in:
- "Metallobjekte" [Metal Objects]. Frauenau Glass Museum online catalog. Jean Beck. Retrieved October 3, 2013. (German)
- "Metallveredelung" [Metal Finishing]. Deusch GmbH. Retrieved October 3, 2013. (German)