Rivet tool early 1900’s - $25 (Paulden)

Looks like a tool for rivets or a tool for snaps or buttons.
Has a Pat date of 1900.
There are 2.
One said PONY and one said REX.
Only one works, the other is rusted but repairable.
May even have been used for shoe repair??? Antique, rivet, appliance, repair, shoe, button, tool, dress, blouse, buttonhole ,