Longines Conquest Ref.1501 Cal.506 35.0mm 1974

A wonderful example of the Longines Conquest Ref.1501, produced in the mid-1970s and celebrated for its robust construction and timeless proportions. Housed in a well-balanced 35mm stainless steel case, this piece offers excellent wrist presence while maintaining classic vintage elegance. The crisp silver sunburst dial is complemented by applied indices, tritium insert hands, and a practical date display. Combined with its original crown and beautifully preserved case, this is a highly collectible Conquest that embodies Longines’ golden era.

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.506 inside running excellently as shown in the timegrapher reading above, just like it was when it left the factory over half a century ago.

DIAL:

• Original silver sunburst dial in excellent vintage condition

• Baton hands with tritium inserts and matching tritium lume plots

• Applied hour indices with black inserts

• Applied Longines logo and original wording

• Date window at 3 o’clock with quickset feature

• Domed acrylic crystal, unsigned at center

CASE:

• Classic round stainless steel case with faceted lugs

• 35mm Diameter (excluding crown) / 44mm lug-to-lug / 10mm thickness

• Professionally polished with all sharp edges intact

• Original Longines-signed crown at 3 o’clock

CASEBACK:

• Screwdown caseback with original Longines hallmarks

• Professionally polished to perfect vintage condition

• Comes with plastic protective sticker as shown

MOVEMENT:

• Longines Cal.506 – Automatic movement

• 21 jewels / ~44-hour power reserve / 21,600 vph

• Quickset date function (quickset by pushing the crown in, ensure to avoid 9pm-3am when doing so)

• Movement freshly serviced and in excellent condition

• Last serviced: March 2026

• Accuracy: ~0s/day

STRAP:

• Handmade 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: Conquest

Year: 1974

Case Material: Stainless Steel

Reference: 1501

Movement Serial: 51558800

Caliber: 506

Diameter: 35mm

Lug to lug: 44mm

Lug width: 18mm

Thickness: 10mm

Lume: Tritium

Strap: Leather

Box and papers: None

Accuracy: ~0s/day

Movement type: Automatic

Crystal: Acrylic

Crown: Original signed crown

Last service: March 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: Afghanistan, Belarus, the Central African Republic, Chad, Cuba, the Democratic Republic of the Congo, Eritrea, Iran, Iraq, Lebanon, Libya, North Korea, Oman, Pakistan, Qatar, Russia, Somalia, South Sudan, Syria, Ukraine and the Crimea, Donetsk, and Luhansk regions of Ukraine.

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.