Not sure of the year i believe 1980. It has a small ding on one side and a smooth dent on the other(easy to pop out) the inside isnt rusty obviously because its aluminium. It still had liquid gas in it which i drained, it has some dried gas shellac that will clean out easily by using/soaking in denatured alcohol it has the stock gas cap and includes the fuel valve. The item "Yamaha 1980 XT/TT 500 aluminium fuel tank.Used, originalpaint and decals, COMPL" is in sale since Saturday, March 20, 2021. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Body & Frame\Gas Tanks". The seller is "buffalloguru750" and is located in East Meadow, New York. This item can be shipped worldwide.