Omega 260 (30T2PC)

The first 30 mm movement with Incabloc shock protection and antimagnetic mono-metallic balance, remaned to cal: 260 in 1949 when the old caliber number system was abadoned. However, these movements are always signed 30T2PC on the base plate below the balance. According to documentation there was also an 30T2PC 17p (17 jewels) made, later named cal: 261, i have never seen one and im curious if it ever really was manufactured? The 30T2PC movements appeared in Sweden just after the WW2, mostly in the 2400 Suverän case but also in Dennison cases.

• Example movement 1: Number: 10 029 219 manufactured in aprox: 1941, 42, rhodium plated bridges.

• Example movement 2: Number: 10 688 138 manufactured in aprox: 1943, 44, rose gold plated bridges.

Detail, these movement shall have the one piece regulator and blued Breguet hairspring.

Technical data: Omega 30 T2 PC (30 T2 PC AM 15 p).

• 15 jewels, manual wind, sub second.
• S: = 30.00 mm.
• H: = 4.00 mm.
• N: = 18.000 A/h.
• Power reserve: 43 h.
• Mainspring:

Versions with sub second:

• 30: 15 jewels, bi-metallic compensation balance no shock protection (1939).
• 30T1: 15 jewels, bi-metallic compensation balance, no shock protection (1941).
• 30T2: 15 jewels, bi-metallic compensation balance, no shock protection (1941).
• 30T2PC: 15 jewels, incabloc, monometallic balance (1941).
• 30T2RG: 17 jewels, chronometre, no shock protection (1943).
• 260: = 30T2PC from 1949, rose gold plated movement (1943).
• 261: 17 jewels, antimagnetic (1943).
• 262: = 30T2RG from 1949 (1943).
• 265: 15 jewels, antimagnetic (1949).
• 266: 17 jewels, antimagnetic (1950).
• 267: 17 jewels, antimagnetic, bewelled main plate (1957).
• 268: 17 jewels, antimagnetic, ring balance, Breguet hairspring (1960).
• 269: 17 jewels, antimagnetic, ring balance, flat hairspring (1963).

Versions with center second:

• 30SC: 16 jewels, bi-metallic comp. balance, no shock protection, c-sec (1940).
• 30SCT1: 16 jewels, bi-metallic comp. balance, no shock protection, c-sec (1941).
• 30SCT2: 16 jewels, bi-metallic comp. balance, no shock protection, c- sec (1941).
• 30SCT2PC: 17 jewels, incabloc, monometallic balance (1943).
• 30SCT2RG: 17 jewels, chronometre, no shock protection (1947).
• 280: = 30SCT2PC from 1949.
• 281: = 30SCT2RG from 1949.
• 283: 17 jewels, antimagnetic (1950).
• 284: 17 jewels, antimagnetic, bewelled main plate (1957).
• 285: 17 jewels, ring balance, Breguet hairspring (1960).
• 286: 17 jewels, ring balance, flat hairspring (1963).