I picked up an war era enfield no. 2 mk1 pistol this morning. I traded a guy a bunch of 8mm surplus for it. I did some reading and have some questions. The blue book of guns says this thing is worth 600 to 650 (75-80%). I am having a hard time swallowing that. What is its actual value? How the heck do I figure out what year this was made? I see no date stamping. There is a 49 stamped into the barrel but according to the books I have been reading say they were introduced in 1938 and went out of production in 1943. For the age, this things is in pretty good shape. There is some holster wear but not much else. I just cant get my head around what I have though. Any help would be appreciated.