inlaid coin

I have a 1855 French 10 Centimes with the front engraving of Napoleon inlaid into the coin. Never heaard of an inlaid coin and wonder if this could be real.

I have seen object such as this or also Schraubmedaillen as we call them in Germany.

I have seen quite a few from WWI era as trench art.

this might have been made once by a French soldier in the Franco-Prussian war and could have once contained an image or something else from a loved one.

as you see I used words such as might or could so what is was exactly used for might never come to light.

 I like them and have two, so far … 

https://en.numista.com/forum/topic67533.html#p549707 

https://en.numista.com/forum/topic63218.html#p515949 

https://en.numista.com/forum/topic67533.html#p549489 

Thank you for the information. I have never heard of this before. the inlay is very precise. 

Careful work in the lathe. Not difficult, given good tools.