I.F.S. Travan-Cochin Official 1949-51 1a on 2ch orange SGO4a

I.F.S. Travan-Cochin Official. 1949-51 1a on 2ch orange, type 01 'SERVICE' overprint, perforation 12½, error surcharge inverted, fine unused. A spectacular error. Official. SG O4a

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