A "Mouse" countermark on a 1816 half crown

[bagerap]

I've tried this coin elsewhere, but I'm still no further on.
The countermark on this halfcrown looks to me to be produced by a uniform stamp, rather than a series of punches. In which case has it appeared on other coins? The clumsily inscribed date of 1881 is probably unconnected.

[Figleaf]

Tough one, Bob. Just in case you hadn't checked yet, it's not in Gavin Scott's "British Countermarks on Copper & Bronze Coins". The problem is that 1816 is a bit early for the advertising pieces Scott catalogues. Not impossible, though.

My best guess: a post-Napoleonic war (possibly colonial) love token, where MOUSE is a nickname. This way, even when his compadres find the coin, the soldier can claim it's a good luck piece, so they can't tease him with his back home sweetheart.

Peter