Domestic letter from St. Thomas 24 December 1915 to Christiansted. 10 BIT King Frederik VIII tied by LAP 'ST. THOMAS 24/12 1915', local CHRISTMAS SEAL 1915 on reverse and tied on reception at 'CHRISTIANSTED 24/12 1915', thus cancelled when arrived at Christiansted, very unusual. 10 BIT is the local letter rate within DWI.