1,039/Smoothed Out Slappy Hours is a collection of early recordings by American punk rock band Green Day, released on July 1, 1991 by Lookout Records. Often referred to as the band's debut album, the compilation combines the band's actual debut 39/Smooth and its first two extended playsSlappy and 1,000 Hours, which are all currently out of print. The album included one cover, "Knowledge" (originally from the Slappy EP), which was originally by influential California punk band Operation Ivy, whose singer, Jesse Michaels, contributed the artwork for the album. The cover art features the same image from 39/Smooth.
Lookout! re-released the album in 2004 with special limited packaging and all new enhanced CD-ROM features, including live performances and pictures. The album was re-issued in the same packaging in 2007 through Reprise Records after Green Day pulled the album in August 2005, as well as all of its other material released through the label, from Lookout! due to unpaid royalties. The album has been certified Gold in the U.S. by the RIAA, and according to Nielsen SoundScan, it has sold 632,000 copies in the U.S. as of August 2010. The album was certified Gold in the UK on July 22, 2013, representing sales of at least 100,000.
Initially released in 1991 through Lookout! Records (despite the 1990 copyright date on the album), the label re-issued the album in a remastered form in 2004. It was re-released on CD on January 9, 2007, by Reprise Records, the label Green Day has been signed to since leaving Lookout!. In Europe, the album was already re-released by Epitaph Europe, and has remained in print. It was reissued on vinyl on March 24, 2009, by Reprise in a package containing the original 10-song 39/Smooth LP along with reissues of the 1,000 Hours and Slappy EPs. On the 2009 reissues, the song "I Want to Be Alone" is omitted.
Reviews of 1,039/Smoothed Out Slappy Hours were largely mixed; for example, Rolling Stone gave it 2.5 out of 5 stars. Brad of Punknews.org gave it 3.5 out of 5 stars, writing, "All in all, this album succeeds at being quite good. It shows obvious influences from the Clash and the Ramones, and is a good debut for a young band that would later change the course of Punk Rock forever by opening the floodgates for New School bands."