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Tissot caliber 27

Tissot Caliber 27

Tissot caliber 27

Manufacturer Tissot
Caliber Number 27
Movement Type Mechanical, manual-wind
Vibrations Per Hour 18,000 bph
Jewels 15
Power Reserve 43 hours
Diameter 12”’ (26.50mm)
Lift Angle 51
Height 4.05mm
Hands 1.50mm, 0.80mm, 0.21mm
Hairspring Flat
Shock Absorber None
Hacking? (Add to comments below)
Stem W2120
Functions Hours, minutes, small seconds
Country of Manufacture Switzerland
Known Models
Vintage Tissot Antimagnetique (add more to comments below)

The Tissot caliber 27 was released in 1936 and produced until 1949 in Switzerland. Following 1949, many variations were introduced and manufactured until about 1961. The movement pictured here is a caliber 27 without an anti-shock system. We previously posted this caliber 27-1T which is the same movement with an Incabloc shock system. The 27-1T was produced in between 1950-1952.

The movement pictured above is from a Tissot Antimagnetique watch.

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What makes a movement like this anti-magnetic? I was always thinking the watch case is what did it?

Melvin Hollenberg
Melvin Hollenberg

It’s a combination of both. Sometimes they would use a cover that would protect against dirt, dust and magnetism.
The main protection is the new alloy they were using for the hairspring. It was and is much less vulnerable to magnetism than the older blue hairsprings.

Service: Tissot Antimagnetique Jumbo Cal. 27 - WahaWatches

[…] Tissot watches, including the Antimagnetique, came with all kinds of evolutions of the Tissot 27, but this one has the base […]

danny Able
danny Able

I have a mechanical movement C 1960 with number 3306770 Tissot. Cannot identify Calibre, or other details such as year of manufacture . Ladies watch with case number 6013-1, gold…


very old Incabloc shock that mosh important need