In answer to your questions: The cylinder is numbered to the gun, as is the yoke. The cylinder has been bored to accept a .41 cartridge. The stocks are not original to the gun (the gun was fitted with large target-style magnas), are not numbered and appear to be mismatched, as the left has a large gold medallion while the other is plain. The work appears to be well done, but I can find virtually nothing on a 38-44 to 41 conversion. I would really like to know who did the work, but there is no information and nothing on the frame that provides a clue. DC - You indicate that the frame was modified to accept the Model 57 barrel: what issues might I encounter trying to refit a stock 38-44 barrel as part of a conversion back to the original caliber (I have a 38-44 cylinder)? The other option is to use it in a .41 special configuration - I would think that the 38-44 cylinder would handle the pressure (?) Thanks to all for the information.