PERM: 10 kopeck brown & blue, slightly touched at lower left, otherwise good even margins, tied by clear strike of pre-philatelic double line "PERM 21 MARCH 1858" to entire letter to Moscow. Very fine and fresh. The only recorded No.1-cover from Param, which was in 1858 a small village in the isolated Ural area. Certificate Buchsbayew (2017)
