Zambia 1968 Revenue 50n imperf marginal proof block of 6 on gummed paper, some ink marks, ex archives
Zambia 1968 Revenue 50n imperf marginal proof block of 6 on gummed paper, some ink marks, ex archives
Zambia 1968 Revenue 50n imperf marginal proof block of 6 on gummed paper, some ink marks, ex archives