The auction estimate for the one with the lid was $50 - $200 with a starting bid of $50. Although it might have a missing top, I believe your image on it is more desireable than the generic design on the similar one. You could give it a shot on Ebay with the same $50 starting bid, list it with other tankards and see what happens, or you might want to contact some tankard and stein collectors to see what they have to say.