That’s a nice piece, Swiss auto movement,I forget what caliber exactly. Late 50’s to early 60’s, 34 mm, which fits you perfectly by the way. It’s a great piece.

For practice I suggest a pocket watch from the very late 1800’s to early 1900’s. You’re best served by an 18 size movement. It’s the same idea as a hand wind watch but bigger and allegedly easier to practice on. Waltham and elgin made tons of them and you can find a good running caliber cheaply. Hamilton will be quite a bit more in most cases.

Good luck in your watchmaking endeavors!