1905-06 Picture postcards franked 1d cancelled by the Sea Post Office c.d.s code "2" (on a postcard of R.M.S "Oceanic") or "7", both fine. (2).

1905-06 Registered covers from USA to G.B with Sea Post code "2" backstamp (R.M.S "Oceanic") or from G.B to USA with Sea Post code "7" backstamp (R.M.S "Majestic"), and a picture postcard from Italy to G.B handstamped "MISSENT" alongside the Sea Post c.d.s code "2" applied on R.M.S "Oceanic". Three unusual uses of these Sea Post Office datestamps. (3). Photo on Page 84. (Image1)