i found a banknote (not banknote, I mean federal reserve note because I'm too lazy to erase that and type in the new thing, but its weird I'm going through all this effort to explain this) that has a serial number 30399557 (I call it a double double) and i was wondering how often you find those in a strap of 100 singles
IMHO...that serial is not worth keeping. But, if it's a $1 note and you like it...keep it. Not a lot invested in a $1 circulation find.
