I remember this one as a kid in the 1950's when so called Mercury dimes were common. You show your friend the reverse of a circulated Merc. and ask "Do you see the hatchet". They say "Yes". Then you rotate the coin 90 degrees clockwise and ask "Do you see the pig walking across the log?" They say "Yes". Then you rotate it another 90 degrees and ask "Do you see the naked lady behind the tree?" They ponder and say "No". Your reply "What do you expect for a dime".
Here's the only one I know and it's sort of cheesy, but since you asked for coin jokes... Why were all the coins so unhappy? Because the war nickle and peace dollar were always arguing.
Back before the penny lady was a lady she was the penny girl, one of the older boys said to her, I will trade you this great big nickel for that skinny little dime. Penny girl took the coin and looked at it, and said "alright", the Boy laughed and said let that be a lesson to you, a nickel is worth only five cents, a dime is worth ten, a dime is worth two nickels. Penny girl had meanwhile stapled the nickel into a cardboard flip, she showed it to him and said, I know what coins are worth, you traded me a Silver war nickel worth at least a dollar for a clad dime that is only worth ten cents, let that be a lesson to you, do not trade coins with a numismatist. Okeh the joke needs some work to make it a little snappy
