GB 1929 PUC 1d K29 Mint Block of Six, Broken Wreath Variety

Great Britain 1929 George V Postal Union Congress 1d, fresh corner marginal block of six with control K29, mainly unmounted mint. Includes the unmounted mint “broken wreath at left” variety, identified as plate 4, row 19/12. The mounted stamp identified as row 17/12 also shows a broken O in “CONGRESS”. King’s Specialised reference: NCom6d for the broken wreath variety. Catalogue value: £200 for a mounted mint single of that variety.