Am enclined to agree with Richard,do your home work. Buy Books,Watch auction Prices,& Copy Pictures, to compare. Have made Hundreds of trades in the Past,some are good,some not. Bought (2) of the Rarer $10s Strikes from a Dealer at $100 each under actual value,& later made 2 bad trades. Point being forget it & go on with the next trade. I don't feel bad,if my trading partner,was a little sharper,on that particular trade. After all we all like to make the best deal possable for ourselves.