Omega 302 (R 17.8), Balance staff, No: 1321

• OMEGA original part, not in factory packaging.

• Fits cal: 302, 310, 311

Versions:

• R17,8: sub second, rhodium plated bridges, to 1949.
• R17,8AM: sub second, antimagnetic, rhodium plated bridges, to 1949.
• R17,8SCAM: center second, antimagnetic, rhodium plated bridges, to 1949.
• 300: same as 17,8, sub second, rose gold plated bridges, from 1949.
• 301: same as 17,8AM, rose gold plating, from 1949.
• 302: sub second, incabloc.
• 310: same as 17,8SC, from 1949.
• 311: same as 17,8SCAM, from 1949.