unmounted mint  1915-28 6d. ultramarine Die IIA (Substituted Cliché, upper plate, right pane, row 10/6), unmounted mint; one perf. with faint fox mark, otherwise of lovely fresh colour and very fine. Rare. S.G. 38a, £900. ACSC 19ea. Photo
unmounted mint 1915-28 6d. ultramarine Die IIA (Substituted Cliché, upper plate, right pane, row 10/6), unmounted mint; one perf. with faint fox mark, otherwise of lovely fresh colour and very fine. Rare. S.G. 38a, £900. ACSC 19ea. Photo

Details
unmounted mint 1915-28 6d. ultramarine Die IIA (Substituted Cliché, upper plate, right pane, row 10/6), unmounted mint; one perf. with faint fox mark, otherwise of lovely fresh colour and very fine. Rare. S.G. 38a, £900. ACSC 19ea. Photo