 U.S. Army Intelligence discounted the arrival of the Tiger I in 1942 and the Panther tank in 1943, predicting that the Panther would be a heavy tank like the Tiger I, and doubted that many would be produced.There were also reports of British QF 6 pdr (57 mm) guns being able to destroy the Tiger I.However, this only happened at very close ranges and against the thinner side armor.