1927 Airmail opt set 1ch-30Kr, opt SPECIMEN. VF fresh MNH. Persiphila 740-55 cat $1650 for M, should be double, US$3300 MNH. SG 642-57(s) cat £1100 for normal M set, +50% for specimen & should be at least double, £3300 MNH, Sc C1-16(s) cat US$914 for normal M, plus +50% for specimen, so US$2750 MNH. Very rare genuine MNH set. 2013 Ceremuga photo cert. (16). (P) (Image1)