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This is a genuine ETA winding stem for 955.112/956.112 movements, Swiss made. It connects the crown to the keyless works for time setting and stem position control. The 955.112 is an 11½ ligne (25.6mm) caliber, the 956.112 is a 7¾ ligne (17.2mm) caliber, both featuring 0.90mm (Tap 10) stem specification. This product is brand new and original, typically requiring cutting to case length during installation.
Compatible Movements：ETA 955.112, 955.412, 956.112, 956.412 and related series
Origin：Swiss Made
Stem Spec：0.90mm（Tap 10）
1. Is this winding stem an original ETA genuine part?
Yes.
2. Are the 955.112 and 956.112 stems interchangeable?
Yes. According to ETA technical documentation, stems, train wheels, setting parts, screws, and train wheel bridges are interchangeable across this movement family. The stem reference is 956.112 with 0.90mm specification. Circuits, mainplates, and insulators are not interchangeable.
3. Which movements is this stem compatible with?
It fits ETA 955.112, 955.412, 956.112, 956.412 and related variants. The 955.112 is an 11½ ligne (25.6mm) caliber, and the 956.112 is a 7¾ ligne (17.2mm) caliber, both featuring date at 3 o’clock.
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