BATUM BRIT OCC 1919 SG17a Mint unmounted 5r brown error CCUPATION

1919 (10 Nov) 5r brown, type 3 opt, block of 6 (2x3), showing error 'CCUPATION' on left stamp of the centre row (with a small trace of the 'O' remaining as usual), unmounted o.g. R5/1 on the sheet of 432 (18x24). Slight wrinkling, still fine appearance. Very scarce, especially unmounted, as the error was not present throughout the print run of 611 sheets. (cat £425+) - P212016915