www.925-1000.com

https://postimg.cc/PCVxXsn6
https://i.postimg.cc/x8Rq14VV/IMG-20190827-125326.jpg

Hi and welcome to the forum.

Please embed your images (in postimage choose 'Share', then copy the 'Hotlink for forums' code).

Phil

HI,
It depicts in relief The Night Watch painting by Rembrandt.
Embed the images as suggested.Looks like nickel silver, most likely Dutch but cannot recognize the maker.
regards