Offered here is an RARE Commodore 16K cartridge to be used with a Commodore VIC 20 computer to expand the memory of your VIC 20 computer by 16k.  This is the later large box version.  This one is boxed and includes its original instruction sheet.  Cartridge appears to have seen little use as there is very little wear on the connecting board.  Box shows light wear and is still mostly encapsulated by its original shrinkwrap.  Includes original 59.99 receipt from K-Mart!  Excellent rare example in this condition.  Sold "as is", PARTS OR REPAIR as I do NOT warranty 30+ year old electronics.    Please check out my other listings.  Buyer pays shipping.  Will combine shipping.  Good Luck!