SGO107 1903 ½d Blue-Green ADMIRALTY OFFICIAL Type II, O.H.M.S. envelope

SGO107 1903 ½d Blue-Green ADMIRALTY OFFICIAL Type II, O.H.M.S. envelope sent in London at ½d Printed Paper Rate (unsealed envelope) cancelled by POPLAR Book Post 11.B cds 6.5.04 no markings on reverse, a fabulous Official item. Ex Wiseman who states This is the only one seen