S S MEXICAN. 1900 envelope to Germany that was on the S S Mexican, a Union Castle Steamship that sailed from Cape Town on the morning of April 4 1900. She collided with the British Boer War troopship S S Winkfield at 2.00 a.m. on the morning of April 5 in dense fog about 80 miles from Cape Town. Various cachets were applied to salvaged mail. This four line cachet with an asterisk after ‘Mexican’ is the rarest of these cachets with very few recorded.