Great Britain 1965 1s6d Salvation Army Centenary (Phospor) imprimaturs, SG666pvar Zanzibar stamps Its intricate nature was possibly

Its intricate nature was possibly an attempt to avoid forgeries

Syracuse AR 4dr 430-420bc

Looks decidedly undervalued based on its current catalogue value against such extreme scarcity

perforated 'SPECIMENS' (type D21)

but overall very fine and fresh

Great Britain 1965 1s6d Salvation Army Centenary (Phospor) imprimaturs, SG666pvar Zanzibar stamps Its intricate nature was possiblyGreat Britain 1965 1s6d Salvation Army Centenary (Phospor), SG666pvar. Superb unmounted mint full original gum left hand marginal imperforate horizontal pair of imprimaturs showing "Extra Pearl" variety in position R. 17 1, each stamp with a "BPMA" handstamp on reverse. A scarce horizontal pair from the very first approved printing sheet. Exceptional provenance as they were released from the British Postal Museum Archives in 2014. Prior to this they