unused -- "Reserve Plate" imperforate plate proof block of four in black on watermarked paper, perf. 14 mint blocks of four (20 with four blocks of four, one marginal with part arrow) and used (9 with a block of six), and perf. 14x14x11x14 used | Christie's

Lot 518

518

unused -- "Reserve Plate" imperforate plate proof block of four in black on watermarked paper, perf. 14 mint blocks of four (20 with four blocks of four, one marginal with part arrow) and used (9 with a block of six), and perf. 14x14x11x14 used

Details

unused -- "Reserve Plate" imperforate plate proof block of four in black on watermarked paper, perf. 14 mint blocks of four (20 with four blocks of four, one marginal with part arrow) and used (9 with a block of six), and perf. 14x14x11x14 used