Hey guys, This is my first post here but not my last. I have posted this same thread in several other firearms forums in the hopes of gathering as much info as I can on this old family heirloom and I figured there had to be some knowledgeable folks here. Anyway I recently acquired a 1942 Ithaca Long Range SxS that has been in my family all it's life, it belonged to my Grandfather who served as a tail gunner in a B-24 Liberator over Europe in WW2 and when he passed away about 15 years ago this gun went to my uncle and then he gave it to me. When I first took possession of this shotgun I thought it was simply a nice family heirloom but upon taking it apart for the first time and looking at it more closely I noticed something strange. Under the barrel there is a serial number indicating it was made in 1942 but what was strange were the proof marks including a "P" and a flaming bomb. These appear to be military proof marks but what are they doing on an Ithaca SxS? What purpose could the military have in such a shotgun? I know that these Ithaca Long Range Guns aren't incredibly valuable and I doubt I would ever sell this gun anyway because it's a family heirloom, however I am curious if this gun is rare and potentially worth more because it has military acceptance markings? Anyway here are a bunch of pics of it, any ideas you might have would be welcome. Thanks!