A friend of mine, a retired gunsmith in his 80's, has asked me to post this picture and see if these items are worth anything in particular. He (we, actually; he did most of the work, I assembled) had built several 1919A4s back in the 90s and dug these tools up. So, my question is; what might the items be worth? There is an air riveter, air hammer, air grinder, some tools for the riveter, what is probably a reamer and a milling tool, and a lot of rivets, and a bucking bar among other things. There is also a batch of parts, but I haven't been able to photograph them yet.