That is a nice looking note to find in your change. IMO in that condition it is a keeper. According to the Standard Catalog of US paper money that bill is $25 in XF condition which yours appears to be. Nice find
Tough decision, but I say keep it. There were 307,200,000 printed. It would make a nice addition to a small type set. Keep one design of each $20 in CU and you have a cool little type short set for the $20 note.