The "Admiralty" stamp with manuscript "3 3/4", fresh colour and good margins all around, used on folded lettersheet from Constantinople to Broussa with boxed ''P Anchor P" alongside, a fine and attractive cover, certificate du Vachat (2009) Provenance: depicted in S. Ringstrom and H.E. Tester "The Private Ship Letter Stamps of the World - Part 2" page 118
