DUPLAIN – Swiss Made Chronograph Automatic Moon-Phases Calendar Watch

1.000 CHF

1 in stock

Discover the DUPLAIN – La Chaux-de-Fonds – automatic chronograph watch, featuring a full calendar (day/date/month), 24 hours and moon phases indications. Buy this rare and stylish collector watch at watch-deals.com for 1000 CHF.

1.000 CHF


DUPLAIN – La Chaux-de-Fonds – ETA/Valjoux caliber 7751, full calendar with moon phases automatic chronograph watch.

The case diameter is ca. 38 mm (not including the crown and the pushers), in stainless steel, with a see-thru case-back showcasing the oeil-de-perdrix decorated 7751 movement with blue screws.

The dark blue dial has silver baton indexes Arabic numerals, silver hands and white accents.

Small seconds and 24 hours time counter at 9:00, 12 hours counter with moon phases indication at 6:00, 30 minutes counter and day/month indicator at 12:00 (in French). Central seconds hand and central date hand.

Gray textile-over-leather strap (aftermarket) with ardillon buckle.


Automatic chronograph
Escapement: stone lever
Yoke winding system
Stop mechanism: Cam switching
Glucydur balance wheel
Nivaflex mainspring
Incabloc shock protection


Small seconds
1/8-seconds counter, 30-minutes counter, 12-hours counter
Date: hands, quickset date feature
Hacking seconds
Complications: 24-hours indication, day: quickset date feature, moon phase: rapid advance


25 jewels
28,800 A/h
Power reserve 46h

No box or papers.

The watch is working and keeping a pretty precise time, but as for any other used or vintage watch, a basic revision is recommended.

The article is sold AS IS – any other parts that are not mentioned in the description, or not visible in the photos, are not included with this item.

Most of the watches that I am selling are liquidation or collector items, therefor I make no claims and give no warranty regarding continual accuracy of time keeping. Used, antique or vintage watches may need servicing, even if they are in good running condition. Unless otherwise stated they may need to be cleaned, oiled, adjusted or timed. I cannot guarantee a used watch to be waterproof or water resistant.


Additional information


Central Second, Luminous Hands, Self-Winding, Swiss Made, Water-Resistant


Chronograph, Dual Time, Moonphase, Pointer Date, Triple Calendar

Base Movement

7751 Valjoux


28800 A/h

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