1918 envelope stamp washed off 'CAPE TOWN" machine d/s 'APR 28 1918' Addressed to Surrey. Carried on the R.M.S. Kenilworth Castle leaving Cape Town on 2nd May via Sierra Leone. On 3rd June involved in a collision with escorting Destroyer of Eddystone Lighthouse. Straight line 'DAMAGED BY SEAWATER' struck in blue. Kenilworth Castle Type 2 cachet.