Lot 50 POSTAL HISTORY

1963-64 USS Thresher Search dive cacheted covers for first and second dive one signed by the commanding officer, plus 1967 Memorium ovptd cover. On 10th April 1963 Submarine Thresher sank in deep diving tests 220 miles off the coast of Massachusetts killing all 129 crew and shipyard personnel on board. It is believed that flooding in the engine room sank the submarine. (4 diff).