Russian Silver Ruble 1743 ...... Please Help Verify

Your example is actually slightly overweight. If genuine, in this condition we'd be talking about a coin worth $1,000+, and given that, it's worth faking in the correct .800 silver composition and paying attention to duplicating the correct edge style.

See: https://www.NGCcoin.com/price-guide...duid-1538453

However, the details of the portrait match up poorly (note particularly the "pointy" nose on yours, also the thinner hair with a space between it and her shoulder). Other variances abound if you look closely.

Even though varieties do exist, based upon the degree of these observed stylistic discrepancies, I'll opine with a high degree of confidence that this one's a modern numismatic forgery.

Not genuine - details are just wrong and it's too circular. (technology back then could not strike perfect coins)

Gxseries - I agree, there is much on this coin which we do not see on old ones.

An old-fashioned pictoral comparison does it here.