Lot 41099 – 1874-75 Third Issue 2 1/2pi perf. 12 1/2 mint right marginal block of 20 with inverted watermark showing varieties

1874-75 Third Issue 2 1/2pi perf. 12 1/2 mint right marginal block of 20 with inverted watermark, one of the central stamps showing varieties “white hole above E of POSTE” (pos.69) and “weak 2 1/2 and distorted frame” (pos.78), light horizontal gum bend along top row, fine and fresh multiple, ex Byam