Another silver Merc and ring need help with

[MackDog]

Went to what I refer to as Merc park for 2 hours today and found a 1944 D Merc and a ring. The ring feels heavier than silver and rang up in the 70's on the At Pro. Here's the marking inside can anyone help me on what it is? Thanks for any help. You guys are usually awesome.

 

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[against the wind]

Don't know about that hallmark but those are some pretty finds.

 

[sutphin]

HEY MACK NICE COIN FINDS .

 

[Loco-Digger]

Cool diggs MD. Congrats on those 2 sweet finds. Sorry I am not a hallmark guy.