This stamp is listed on
ebay as Siberia No 68, Priamur Government Issues - Nikolaevsk on Amur. However, the overprint looks to be a modern inkjet application (notice the dots.) These overprints are very rare; anyone have scans of genuine overprints for comparisson?
There seems to be plenty of these overprints on
ebay and other auction sites, but most of the images are too poor to see clearly.
