Auction # 2307 ARGENTINA: Special March auction

RARE VARIETY: GJ.594, 1924 ½c. San Martín w/o period, block of 12 containing 3 stamps IMPERFORATE VERTICALLY. The central stamps have very light impressions of the vertical perfs, and in the 3 left stamps they do not cut through the paper, in the 4th one a little more marked. Also with double horizontal perforation at top, excellent, very rare and unique!