Hong Kong 1966 Churchill Commem 50c corner block of 4 with watermark inverted unmounted mint, SG 219w
Hong Kong 1966 Churchill Commem 50c corner block of 4 with watermark inverted unmounted mint, SG 219w
Hong Kong 1966 Churchill Commem 50c corner block of 4 with watermark inverted unmounted mint, SG 219w