I have a certificate in my desk that is gathering dust. It is for the Chevy truck gas tank mess. It has a face value of $1000.00 if I were to trade up to a new GM product. I can sell it to a third party to use on a new GM product and that value is $500.00 credit. I have no intention of buy a new car or truck in the near future. It is good for about 18 months yet. Any one wants to offer a bid in cash on it or a trade for something of value. Please keep your trade items with in reason and value. I would trade for a good broke 3 bell riding mule. Yellow hair, 18 year old filly (no unbroken ones or hard to reason with), shot gun, Winchester rifle .32, 44.40, 25.20, colt 44 or colt 44.40. 22. Shop air compressor (you pay shipping), generator (you pay shipping) or what ever.