It's definetly a 44 1/2. The octagon R/S flat gets lost in the shadow & appears as a deeper curve on the side of the breech block, if you look closely at the L/S view you can see the curve of the block going from side to side & it's definetly not a factory job. If the price was right I'd buy it, reshape the butt after fitting it to the action & maybe make a set of pistol grips, although the wood looks like it came from the end of an apple crate. As far as the lever goes, it looks like a standard S-lever with finger grips soldered on, something done frequently back in the day. If it's got a fine bore it's probably worth about $750.     ...MIKE...