Longines Ultra-Chron Ref.7885 Cal.431 35.0mm 1969

Up for grabs is a timepiece that showcases Longines at its most innovative, the Ultra-Chron Ref.7885. Produced during the golden era of high-frequency watchmaking, it houses the brand’s automatic Cal.431 running at an impressive 36,000 vibrations per hour, delivering exceptional precision for its time. Complemented by a beautifully aged dial with a gentle, even patina, it offers both historical significance and everyday wearability.

In addition, this timepiece comes freshly serviced with all parts laid out by our professional watchmaker for all to see in the images above. Little to no other dealers do this and it’s a testament to full transparency here at Montre D’or. With the Cal.431 inside running excellently as shown in the timegrapher reading above, just like it was when it left the factory nearly half a century ago.

DIAL:


• Original silver sunburst dial in excellent vintage condition


• Baton hands with applied hour indices


• Applied Longines logo and crisp original wording


• Date window at 3 o’clock with quickset feature
• Domed acrylic crystal

CASE:


• Classic Ultra-Chron case design
 with sharp lugs

• 35mm Diameter (excluding crown)/ 41mm Lug-to-lug / 10mm Thickness


• Professionally polished with all sharp edges intact


• Original Longines-signed crown at 3 o’clock

CASEBACK:


• Screwdown caseback with UltraChron symbol


• Professionally polished to perfect vintage condition


• Comes with plastic protective sticker as shown

MOVEMENT:


• Longines Cal.431 – Automatic high-beat movement


• 17 Jewels / ~40 Hour Power Reserve / 36,000 vph


• Semi-Quickset date function
 (Set by turning hands repeatedly between 9pm-12am)

• Movement freshly serviced and in excellent condition


• Last serviced: February 2026


• Accuracy: +2.0s/day

STRAP:

• Handmade Black Crocodile Leather strap, 18mm lug width

• Aftermarket Longines-signed stainless steel buckle

AFTERCARE PACKAGE:

• Comes with a black presentation box + silica gel


• Complimentary PolyWatch crystal polishing kit (for acrylic crystal)


• 6-month warranty (covers non-user damage only)


• Guarantee Certificate with full service details included


• Access to our exclusive post-warranty repair services


• 7-day return policy for peace of mind

SPECIFICS:

Maker: Longines


Model: Ultra-Chron


Year: 1969


Case Material: Stainless Steel


Reference: 7885


Movement Serial: 50242501


Caliber: 431


Diameter: 35mm


Lug to lug: 41mm


Lug width: 18mm


Thickness: 10mm


Lume: NIL


Strap: Handmade crocodile leather strap


Box and papers: NIL

Accuracy: +2.0s/day


Movement type: Automatic high-beat
Crystal: Domed acrylic


Crown: Original Longines signed crown


Last service: February 2026

Free express tracked shipping with signature upon delivery. Delivery within Singapore in 1-2 working days. International shipping may take 2–12 working days depending on destination and will be shipped via FedEx/UPS/Aramex/SingPost

Do note respective custom duties might apply which includes the recent US tariffs and are the buyer's responsibility.

Do note that for US bound shipments the PolyWatch polishing kit will not be included in order to mitigate customs delay due to new customs requirements

Countries that we do not ship to: Algeria, Nepal, Pakistan, Russia, Vietnam, Iran


This is a vintage timepiece and water resistance is not guaranteed. Please avoid contact with water or moisture. Store the watch with dry tissue or silica gel to preserve its condition. We are not liable for water damage post-purchase.