Prison ring

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A prison ring is a type of plastic jewelry fashioned by hand in prisons, by working scrap plastic material, commonly celluloid items such as a toothbrush or a pen.[1]


  1. ^ Leigh Leshner (28 February 2011). Collecting Art Plastic Jewelry: Identification and Price Guide. Krause Publications. pp. 9–. ISBN 978-1-4402-2751-6. Retrieved 26 August 2012.