Collector of rare varieties and PF of Russian stamps

Selling my lifetime collection of Russian & Soviet Union stamps. I have collected rare Russian & Soviet Union stamps, as well as printing errors, all my life. I have been fascinated by printing errors, both established and new, unidentified until now. All my stamps that I put up for sale are 100% genuine, and the errors have been verified and appraised by recognized philatelic experts in the field.