The Raritan Auction #93 presents several stamps, including a description reading
Since the Auctioneer put this in the text, I assume, he wants to get a message to the potential buyer. Perhaps: Signed by an expert; or ex collection of a serious collector who spent a lot of time researching the material. He added some more well formulated text:
“very rare, only a few stamps recorded”
Let us have a look at the stamp so lovely described.
To make a long story short: this is an abysmal badly executed forgery. Certainly, there are well executed forgeries, who need an expert opinion or some extensive research. A dealer cannot be an expert in all areas. But this is such a crude attempt.
We also learn, that ex Zakhary Umikov is not something which helps distinguish forged from genuine overprints.
More forgeries ex Zakhary Umikov
Another “old friend” are these newspaper forgeries. Beware!