Found these today mixed in with banded singles. It was a banded $50 stack from the bank. Not sure if there’s any significance with the signature or not but thought it was a cool find
Interesting, no idea specifically but there is an antique shop here that stocks half dollars, dollar coins and 2 dollar bills to give as change, and the 2 dollar bills are all stamped with the name of the shop. I presume it's something like the "Where's George?" stamps and the owners like to track the flow of their bills for fun. Maybe something similar was going on with your bills?