I found this recently not sure if it's 41 or a 42. The funnel,original fuel cap and tools were missing but it's in pretty good condition. I stripped the burner right down and replaced the graphite seals with new made from graphite tape from Fettlebox. I was looking for an NRV Pip to replace having done some research on the forum but discovered the ball bearing and locking pump seal arrangement. I should add that it's got a brass tank three legs and is marked US Coleman 1944. The container is painted and corroded and the whole thing has a used feel about it which I like. I may clean the container so it could be used for cooking.