Description
1916(Jul 5) longer 224 x 95mm printed O.H.M.S. envelope to Miss G.M. Walton, Ladies Emergency Committee, The Navy League, Glasgow cancelled on arrival London/172 cds above black framed RECEIVED FROM H.M. SHIP / NO CHARGE TO BE RAISED & with blue violet double rimmed 50 x 27mm SENIOR BRITISH NAVAL OFFICER / WHITE SEA believed to be from the British Navy Submarine force attached to the Russian Baltic Fleet tasked with preventing the import of Iron ore from Sweden to Germany..Gould in Appendix A page 201 lists the mark but does not provide any other information….See :- https://en.wikipedia.org/wiki/British_submarine_flotilla_in_the_Baltic