Difference between revisions of "Crawford Triple Date"
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==Crawford Triple Date== | ==Crawford Triple Date== | ||
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* Functions: hour, minute, decentral second | * Functions: hour, minute, decentral second | ||
* A/h: 18000 | * A/h: 18000 | ||
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==Links== | ==Links== | ||
[[Crawford]] | [[Crawford]] | ||
Latest revision as of 21:42, 18 November 2020
Crawford Triple Date
Unusual triple date format with crown at 10 o'clock setting month and, when pulled out, the date wheel. Day is set to the red marker and date wheel moved to correct date by red marker. Needs to reset at 1st of each month and the month wheel moved manually. Seen in a variety of case styles and finishes. Example shown is steel, press back, drilled lugs.
Assembled from Swiss parts circa 1951-1959.
Features
- 17mm lug width
- 34mm width ex crown
- 41mm lug to lug
- Blued steel Radium hands and dial marked SWISS and BREVET
- Red steel date hand
- English month wheel
- Movement is modified 17 jewel manual wind FHF175. They are signed only under the dial and you need to remove the calendar mechanism to identify it.
Movement Details
- Manufacturer: FHF
- Caliber: 175/179
- Number of jewels: 15
- Escapement: Pallet lever
- Balance types: Glucydur screw balance
- Shock protection(s): Incabloc
- Balance bearing / direction hairspring: Clockwise
- Moveable stud: no
- Adjust mechanism: Long regulator arm
- Construction: lever escape wheel, seconds wheel, third wheel, center minute wheel, mainspring barrel
- Setting lever spring: 4 hole(s)
- Features: s
- Functions: hour, minute, decentral second
- A/h: 18000
- Size: 11 1/2
