Friday puzzle -- US coin and currency
Castor and Pollux Janus own Janus's Curiosity shop. They have the most unique collection of trinkets in the town. What is most curious about these two brothers is that they have been trying for years to sell their business. They are offering to sell the entire store with the entire inventory for only $17.51 US. The catch is that they will only accept payment in cash, and will only accept a certain combination of bills and coins totaling exactly $17.51. All coins and bills must be different from each other (date or mint letter are not considered a difference for this purpose), but all coins and bills must also have one certain thing in common. (Something a bit more unusual than all having a president's face or all having "In God we trust") Can you buy their shop by figuring out their secret combination of monies?
I'll give you one tiny hint: there is something to be gleaned from the names of the brothers.
That's the way I saw this puzzle. I still think it is too hard, but I'm no numismatist. I'll give a hint and a couple of the coins in a separate message.