QUOTE(gxseries @ Jan 1 2007, 06:15 PM) [snapback]290587[/snapback]
Back to the topic - I do agree that the pictures are unfortunately too unclear to make good comparsion. Yet there is something I like to point out. From the time of Peter III 1762 to the end of Catherine II 1796 silver coins were minted in 72% fineness and mass of 24 grams. Yet during Pavel I's 1796-1797, more specifically the Albertus ruble itself, it was minted in 83 1/3% fineness and 29.25 grams. That is two completely different planchets.
Would it not have been possible that the mint took some samples and struck them as tests? I don't see how the mint can crank out different alloy and planchet differences within a short period of time, especially with the technology at that time.
I don't know if this coin is real or not. If it is a fake, it is better than most in that it is not something that screams "FAKE!" at you as soon as you look at it.
I don't know the people at ICG, have never submitted a coin to them or otherwise done business with them. I doubt that they have any special expert knowledge when it comes to Russian coins, but I think that is probably also true of the other slabbing companies. The question then is whether they use outside consultants and, if so, who those consultants are. Probably there are only a few people who are consultants for authenticity and it seems likely those expert consultants would work with more than one company.
The overstrike is interesting. I can't recall seeing an obvious overstrike such as this coin before, but that might not be very significant.
There were a lot of interesting and not clearly understood (by me) things happening with the coinage under Paul. Particularly interesting were the Albertus rouble of 1796 (this type), the more commonly seen "heavy" rouble and its fractions of 1797 as well as the pattern yefimki of the same year which give the value of the coin in Dutch stuivers on the edge.
Considering these unusual issues, it appears that that there might have been an effort to create a "trade rouble" equivalent in intrinsic value to the important silver trade coins of the era that would have circulated in the Baltic area. The Dutch coinage would obviously be a major influence given the importance of the Netherlands as a commercial and banking center in that time and the Austrian empire would also be an important influence.
The undertype is identified as an Austrian thaler of 1790 with weight given as 28.86 grams, which is reasonably close to the ~29.24 grams gross weight of the 1797 heavy rouble. I don't know the fineness of the Austrian coin, but it might be higher than the .868 standard of the 1797 rouble, and so account for the ~0.4 gram weight difference between the 2 coins.
In such a situation, the overstriking of the Austrian coin as a pattern Albertus rouble (as gx has suggested) does not seem so absurd.
Perhaps we should not be so quick to condemn the coin as false.