What can you tell me about this braising/roasting pan?

Came across this copper braising pan with warming stand. I’m new to copper but so far I can’t match the design, handles, or rivets to a specific region or time period with certainty. The stamp in the photos is the only marking I’ve found. At first the shape reminded me of Maine (perhaps influenced by where I love), but that’s not right. Thanks in advance for any guidance! Let me know if additional photos would help narrow it down further.

 

Chafing dish? Nice one, if so. It's tinned copper.