Stamps & Covers Public Auction 356

1965 General Monash 5d, blk of 15 (=¼ sheet) with margins, top 3 stamps error yellow colour OMITTED from upper half of stamp, so '5d' is white instead of yellow! VF fresh MNH. SG 378(var), ACSC 432(var), error unlisted as new discovery of which only 1 sheet was found last year. Only 4 blks of 15 exist, the 1st blk offered sold for $1780+ in auction 340. 2018 Ceremuga AIEP photo cert. (15) (P)