Not much room to wedge even an xacto blade in the edge and the coppers pretty soft. I might try soaking it in some nail polish remover or acetone. I doubt it being soldered in, maybe super glue or something similar. I might even try some low heat. Was hoping somebody tackled one sucessfully.Without seeing it it's hard to say but I think I would start by taking the switch apart and trying to wedge a good strong knife blade between the penny and the switch.
I just about has to be glued on.
Sent from a Galaxy far far away