I have recently purchased two 1 kopeck Russian coins, they were both labelled as being minted under Peter the great but after trying to find the specific type to log into my collection I found the weights don't seem to add up.
Coin 1 weighs 0.582g and is 15mm across at the widest point.
Coin 2 weighs 0.633g and is 14mm across at the widest point
From what I have seen in the last few hours I spent browsing the catalogue almost all of the 1 kopeck coins minted under Peter the great are significantly lighter.
Please help me figure out what is going on and if these coins are fakes or have been misidentified
