The Morgans, 1921 P's, got for a bit over melt. The Franklin? Take it out of the holder, could be a proof, or just polished. [More likely just polished. Then melt.]
So the dollars came in a purple box as a set would they be worth more to sell in a set like that or not?
Possibly a premium in box as a point of sale impulse item or at a flea market. 1921 dollars are very common high mintage BUT I would research to see if there are any varieties and whether or not you have one before selling. My cherry pickers books are not handy but you could check the online CONECA MASTER LISTINGS as a quick check. Possibilities include RPM and DDO or DDR varieties. Don't recall any Over Mintmarks for that date. good luck and best wishes.