COLOMBIA, 1921, 20c Red Brown, Violet "R" Registration Handstamp, Se-Tenant Pair (Sanabria 63 var).
Horizontal se-tenant pair with normal (Scott C28), used with 50c Blue, Air Post (C30) and National 3c horizontal strip of three, all tied by violet Bogota handstamps on large part of registered cover to Cartagena, "Dec. 1, 1922" machine date at bottom, cover reduced at left, Fine and extraordinarily rare, this is this only recorded se-tenant pair on cover,
last sold in a Robson Lowe (Bermuda) sale in 1979, signed F.J. Field on reverse
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