I was at a gun show recently and found some unusual Mosin Nagant rifles, but didn't know enough to identify them and gauge their value. So I bought them just in case, and then I picked up a copy of Terence Lapin's The Mosin-Nagant Rifle. It was a pretty useful book to me (and my Civil Guard marked Finnish M/91), and I think it is a good addition to any gun library. Pick up a copy at Amazon, and get learn the details you'll need to pick the really valuable Finnish cavalry carbine out of the sea of 91/30s at your next show! http://www.amazon.com/gp/product/1882391217/ref=as_li_tf_tl?ie=UTF8&tag=forgoweapo-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=1882391217