Gallet MultiChron 30M
Introduced in 1914

The MultiChron 30, a high quality timer with 2 subsidiary registers and 30 minute recording capability, was the world's 1st true wrist-worn chronograph. The 30 also holds the distinction as the world’s first wrist chronograph to be housed in a “waterproof” case. Engineered in 1936 by Gallet watchmaker Philippe Weiss utilizing Schmitz Frères patent #189190A, the unique 2-part "Clamshell" compression case for the model 30 was designed to protect the delicate inner mechanism from the adverse conditions found on the field of battle. Due to the Clamshell's historic status and superb quality, it has become one of the most coveted timepieces among today's vintage watch and chronograph collectors.

The MultiChron 30M initially utilized Valjoux 13 and 14 ligne movements, followed by the Venus calibre 150 for later series. When Gallet began production of their own Excelsior Park chronograph movements with 45 minute recording capability, the model 30M was replaced by the MultiChron 45M.
Model name: MultiChron 30M (1st series, Royal Air Force)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: modified chronometer grade Valjoux 13 ligne
Case material: sterling silver
Case back: hinged
Dimensions: 35mm diameter
Bracelet: leather or military canvas
Water resistance: n/a
Production years: 1914 - ?
Serial numbers: n/a
Application: artillery timing
Notes: 30 min. recording, enamel dial, crown pusher, 1914 London hallmarked Gallet Case (some mvts marked Electa)
Valuation*
Sterling Silver: $10,000.00 - $12,000.00 (extremely rare)
14k Gold: n/a
18k Gold: n/a
The world's first true wrist chronograph...
Gallet MultiChron 30 Clamshell
Gallet MultiChron 30 Clamshell
Gallet Solar MultiChron 30 Clamshell
Model name: MultiChron 30M (single button, WWI U.S.A.)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: modified chronometer grade Valjoux 22 (GHT)
Case material: .935 sterling silver
Case back: hinged, dual covers
Dimensions: 38.5mm
Bracelet: leather or military canvas
Water resistance: n/a
Production years: 1914 - 1921
Serial numbers: n/a
Application: artillery timing, aviation, racing
Notes: 30 min. recording, enamel dial, push button activation & reset (some movements marked Electa)
Valuation*
Sterling Silver: $10,000.00 - $12,000.00 (extremely rare)
14k Gold: $12,000.00 - $14,000.00 (extremely rare)
18k Gold: $15,000.00 - $18,000.00 (extremely rare)
Model name: MultiChron 30M (3nd series)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: press on
Dimensions: 32mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1933 - 1941
Serial numbers: n/a
Application: artillery timing, sports & racing
Notes: 30 min. recording, olive pushers, tachometer, telemeter scales
Valuation*
Stainless Steel: $3,500.00 - $4,500.00 (rare)
14k Gold: n/a
18k Gold: n/a
Model name: MultiChron 30M "Clamshell"
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1936 - 1951
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: 30 min. recording, world's 1st waterproof wrist chronograph, luminous numbers and hands
Valuation*
Stainless Steel: $7,000.00 - $8,000.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
Model name: MultiChron 30M "Clamshell" (Military Version)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1936 - 1951
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: rare exotic black military dial w/ tachometer & telemeter scales, silver or rose gold hands and indications.
Valuation*
Stainless Steel: $8,500.00 - $9,500.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
Model name: MultiChron 30M "Clamshell"
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1942 - 1951
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: 30 min. recording, tachometer, telemeter scales
Canadian version, retailed through Eaton's Canada
Valuation*
Stainless Steel: $6,500.00 - $7,500.00
14k Gold: n/a
18k Gold: n/a
Reprint of a 1939 Jewelers' Circular Keystone advertisement for the Gallet MultiChron 30, the world's first "waterproof" chronograph.
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click to enlarge
1939 Jewelers' Circular Keystone advertisement for the Gallet MultiChron 30M CLAMSHELL, the world's first "waterproof" chronograph
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* Valuations for timepieces listed on Gallet World are based on an average of fair market prices, either quoted or realized in retail venues, auctions, and NAWCC national and regional shows. Values displayed are for complete timepieces in good working condition with original dials and components.
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"Clamshell" series
"Clamshell" series
"Clamshell" series
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Gallet Single Button 30 minute recording chronograph
Model name: MultiChron 30M (2nd series, single button)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Valjoux 13 ligne
Case material: stainless steel
Case back: press on
Dimensions: 30mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1929 - 1933
Serial numbers: n/a
Application: military issue, aviation, artillery timing, scientific
Notes: 30 min. recording, single olive pusher
Valuation*
Stainless Steel: $3,000.00 - $3,500.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
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Gallet Breitling MultiChron 30 Clamshell
Model name: MultiChron 30M "Clamshell" (Breitling)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 36mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1942 - 1945
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: 30 min. recording, telemeter scales, manufactured for Breitling by Gallet
Valuation*
Stainless Steel: $5,500.00 - $6,500.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
"Clamshell" series
"Clamshell" series
Model name: MultiChron 30M "Clamshell" (Exotic dial)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1936 - 1951
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: 30 min. recording, world's 1st waterproof wrist chronograph, exotic 2-tone black and grey dial
Valuation*
Stainless Steel: $6,500.00 - $7,500.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
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Gallet Racing Heritage Chronograph
Gallet MultiChron 30 Clamshell
Model name: MultiChron 30M "Clamshell" (Technical Version)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1936 - 1951
Serial numbers: n/a
Application: military, artillery timing, sports & racing
Notes: rare multi-color technical dial w/ red tachometer (mph) & "snail" telemeter (distance) scales
Valuation*
Stainless Steel: $7,500.00 - $8,500.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
"Clamshell" series
Gallet Breitling MultiChron 30 Clamshell
Model name: MultiChron 30M "Clamshell" (Harvard)
Reference #: n/a
Movement type: chronograph, manual wind
Calibre: Venus 150
Case material: stainless steel
Case back: 4 screw compression "Clamshell"
Dimensions: 34.2mm diameter
Bracelet: leather or mil.spec. canvas
Water resistance: n/a
Production years: 1939 - 1948
Serial numbers: n/a
Application: artillery timing, sports & racing, medical
Notes: 30 min. recording, telemeter scales, manufactured for Harvard (Goering of La Chaux-de-Fonds) by Gallet
Valuation*
Stainless Steel: $4,500.00 - $5,000.00 (extra rare)
14k Gold: n/a
18k Gold: n/a
"Clamshell" series