innovative machine for its day. Apple I character set The computer used a Signetics 2513 64×8×5 Character Generator, capable of displaying uppercase characters, numbers and basic punctuation and math symbols with a 5x8 pixel font: Collectors' item , 62 Apple I computers have been confirmed to exist, and, according to unverified information, 20 more are likely to exist. From these, 41 were produced in the first batch, 39 in the second batch, and 2 unknown versions, potentially from other batches, also exist. Most are now in working condition. The 1986 official Apple IIe Owner's Guide stated "Collectors now pay between $10,000 and $15,000 for an Apple I." An Apple I reportedly sold for US$50,000 at auction in 1999. In 2008, the website Vintage Computing and Gaming reported that Apple I owner Rick Conte was looking to sell his unit and was "expecting a price in excess of U.S." The site later reported Conte had donated the unit to the Maine Personal Computer Museum in 2009. A unit was sold in September 2009 for on eBay. A unit belonging to early Apple Computer engineers Dick and Cliff Huston was sold on March 23, 2010, for on eBay. In November 2010, an Apple I sold for £133,250 ($210,000) at Christie's auction house in London. The high price was likely due to the rare documents and packaging offered in the sale in addition to the computer, including the original packaging (with the return label showing Steve Jobs' parents' address, the original Apple Computer Inc "headquarters" being their garage), a personally typed and signed letter from Jobs (answering technical questions about the computer), and the original invoice showing "Steven" as the salesman. The computer was brought to Polytechnic University of Turin where it was fixed and used to run the BASIC programming language. On June 15, 2012, a working Apple I was sold at auction by Sotheby's for a then-record , more than double the expected price. This unit is on display at the Nexon Computer Museum in Jeju City, South Korea. In October 2012, a non-working Apple I from the estate of former Apple Computer employee Joe Copson was put up for auction by Christie's, but found no bidder who was willing to pay the starting price of (£50,000). Copson's board had previously been listed on eBay in December 2011, with a starting bid of and failed to sell. Following the Christie's auction,