Suzanne

Hello All! I just picked up an AMT Don Garlit Wynn Jammer "World's First 200 M.P.H. Fuel Dragster." #T257-200 at an estate sale (not assembled). I cannot find the year it was made. Can anyone help me? Can't find anything comparable on ebay. There are a lot of Wynn Jammer Dragster's but nothing like the one I have. The top cover has just a picture of the dragster. Thanks so much for any help I can get! Suzanne