Los 525
5 m. on 1 pia. ultramarine, 1st printing, all 4 control plate blocks in unused condition: transfer B, unmounted mint (top right stamp with small scissor cut), transfer F (bottom stamps unmounted mint, the top left stamp with termite hole), transfer G and transfer D (without gum, top right stamp marginal tear); a very scarce group (Bale 4a)
