Silver repousse plaque with decorated edge

I know - I've shown this before. Still can't find info on it. I cannot find one with a decorated edge. I've gone over it multiple times for marks and found none. I believe it is silver but can't prove it. The tavern scene is typical, but all the houses and scenery around the edge is unique. None of the buildings are repeated. If it had a hanger, I'd call it a flue cover. Now that we have a few new people here I thought I'd take a chance that someone might have a clue. I'd like to sell it but don't have any idea what to charge. About 9" across

 

Probably Jan Steen or another Dutch 'Golden Age' painter.

Bev, didn't you post this one before?

 

It was at the bottom of this page

https://www.antiquers.com/threads/repousse-plaque-silver-tavern-scene.84000/

 

You should have it tested for silver first. Sterling, I believe, is going for about $2 per gram now, or was in the recent future, so I would hate to sell an item as silver-plate if it was (.800-8.35 silver, which I assume, from the German or Dutch scene)

Edit: I want to mention, I purchased an ash tray with a similar tavern scene, and the hallmark (I believe, for .800 or .835) was hidden on the front of the ash tray, nearly incorporated into the embossed scene.