I am new to gunboards so please forgive any neglect of the customs. I recently bought a 1936 Mosin Nagant made in Izhevsk. I fully disassembled it for the first cleaning, all the while checking the numbers, and they did match. Though when I removed the buttplate (which was marked with the serial #) I found a sequence of numbers in the wood of the stock. These numbers are the only large markings on the stock and they do not match the serial # on the rest of the rifle. They don't look like any of the few photos of numbered stocks I've seen online. I have attached some pictures of the rifle and I am really looking for any information about the rifle. I have probably missed a lot because I am new to historical firearms (but I am a student of history so it is really cool to fire a weapon with so much to tell).