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26.5

Introduced in the late 1920s, OMEGA’s 26.5 was one of the brand’s important early wristwatch calibers, built around a manually wound movement measuring approximately 26.5mm in diameter. It was progressively refined throughout the 1930s, with several generations including the 26.5 SOB, T1, T2, and T3, and remained in production over an extended period.

Watches fitted with the 26.5 are most often found in well-proportioned round cases with small-seconds displays, alongside details such as porcelain dials, two-tone finishes, and Arabic numerals characteristic of pre-war OMEGA. Positioned in the period leading toward the later 30mm calibers, the collection offers a clear view into the development of OMEGA’s early wristwatch production.

47 products

OMEGA Porcelain Dial Cal.26.5SOBT2
OMEGA Ref.6126 Cal.26.5SOBT2 DENNISON Cushion Case
OMEGA Cal.26.5 SOB T2
OMEGA Cal.26.5 SOB T2 Sale price¥398,000
OMEGA SEI-TACCHE Black Gilt Dial
SOLD OUTOMEGA Cal.26.5 SOB T2
SOLD OUTOMEGA 35.0mm Cylinder Case Cal.26.5SOB 1934
SOLD OUTOMEGA Oversize 37.5mm Two Tone Black Gilt dial Cal.26.5SOB
SOLD OUTOMEGA Oversize 37.5mm Black Gilt dial Cal.26.5SOB
SOLD OUTOMEGA NO CRACK Porcelain Dial 9K Yellow Gold DENNISON Ref.12701
SOLD OUTOMEGA Officer Bullseye Dial
SOLD OUTOMEGA Oversize 38mm Black Sector Dial Ref.CK859
SOLD OUTOMEGA Officer Bullseye Dial
SOLD OUTOMEGA Cal.26.5 SOB T2 
SOLD OUTOMEGA Officer Blue Bullseye Dial
SOLD OUTOMEGA 1939 37mm Sector Dial
SOLD OUTOMEGA Oversize 38mm Black Gilt dial Cal.26.5SC
SOLD OUTOMEGA Big Scarab Black gilt Dial
SOLD OUTOMEGA Cal.26.5T3PCT1
SOLD OUTOMEGA Oversize 38mm Black Gilt dial Cal.26.5SOBT2
SOLD OUTOMEGA Officer Bullseye Dial
SOLD OUTOMEGA REF.CK2014 BIG SCARAB Porcelain Dial
SOLD OUTOMEGA Ref.CK859 Oversize 38mm Black Sector Dial Cal.26.5SOB
SOLD OUTOMEGA Ref.1355 Copper Dial
SOLD OUTOMEGA Porcelain Dial
SOLD OUTOMEGA Sector Dial Calatrava Case
SOLD OUTOMEGA Ref.2650 Black Guilloche Dial
SOLD OUTOMEGA Scarab case Sector Two-Tone Dial
SOLD OUTOMEGA Ref.CK 785 AF engraving sector dial Extract from the Archives
SOLD OUTOMEGA Ref.OT 710 AS Porcelain Dial
SOLD OUTOMEGA Rare faceted Lugs
SOLD OUTOMEGA Porcelain Military Dial
SOLD OUTOMEGA Officer Two-Tone Gilt Dial
SOLD OUTOMEGA Scarab Case
SOLD OUTOMEGA Porcelain Dial
SOLD OUTOMEGA
OMEGASOLD OUT
SOLD OUTOMEGA
OMEGASOLD OUT

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