![Omega 37.5-1321 (140), Balance staff, DCN: 921](http://urdelar.se/cdn/shop/files/dcn_urdelar_2_775126a4-1eb0-40d1-aa1f-128d9ca35acd_{width}x.jpg?v=1714032050)
Omega 37.5-1321 (140), Balance staff, DCN: 921
- DCN no: 921
- Fits cal: 37.5, 37.5 T1, 140, 142
- A: 306
- B: 160
- F: 90
- G: 131
- H: 67
Versions:
- 37.5 15 P: 15 jewels, 1932
- 37.5 17 P: 17 jewels, 1932
- 37.5 T1 15 P: base caliber 140, 15 jewels, 1941
- 37.5 T1 17 P: base caliber 142, 17 jewels, 1941