This J.D. Caldwell pocket watch features a C.H Maylan movement from my research. It has been re cased in an American case. Watch has been serviced on 4/20/25. It is running on the fast side 40 seconds + a day but not bad for an old pocket watch. All functions work nicely on this watch and fits nice in the case. The dial tested gold with my gold tester weighing at 4 grams. C.H Maylan is know for their high grade movement. Condition of watch can be seen in photos. Thanks for looking feel free to ask any questions.