Hasler & CO S.A., Tramelan Modele L-531/2

European Watch Clock and Jewellery Fair 1992 201
Replica of a period pocket watch : this model by Hasler features a 17-jewel, UT 6497 16 1/2-line hand-wound mechanical movement, Incabloc protection, small seconds hand. 3 or 5 micron goldplated case. (HASLER & CO. S.A., Tramelan - Model L-531/2)