Hi, I came across a coin that I can literally find no information on. It's a 1722 Peter 1, Silver 2 ruble coin. I see information on the 1 and 1/2 ruble, but not the 2. What I am seeing (very limited) is that it is rare - only 20 were struck? I don't even know where to go to find a reputable person to authenticate it. I've brought it to a couple of places, and they've told me they've never seen/held one and wanted to give me $100 for it.... of course I walked away. Any help would be greatly appreciated. I've attached 3 images of the coin, next to a 2 Euro piece for scale.