Lot no. 2634

1890/91: Map 5 s. lilac and Captain Philip 20 s. cobalt-blue, perf. 10, overprinted "OS", the set of two values overprinted "SPECIMEN" in black, with in addition, two further 20 s. values in cobalt-blue (shades) showing differing types of the "SPECIMEN" overprint in black, one upper case and the other lower case, the two paler shades with browned large part og. Minor age spot imperfections but a scarce group