Bingo! Spot on, Fernando K. It’s a copy of the Pattern Enfield 1853 which was the AK47 of the Victorian era and produced in many locations around the world. It was the second most used rifle in the US Civil War after Springfield. I attach a picture of an Enfield used in the US CW. They imported 900,000 Enfield rifles! You clearly recognize the lock and the stock design, although mine is obviously for the oriental market with that kind of butt and octagonal rifled barrel and no strap fasteners. No wonder I thought it looked European. Now I like it even more!
. Thanks Fernando K!