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Pre-Owned A. Lange & Sohne Grand Lange 1 40991001/AS06789

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What you’re looking at is an example of the most important wristwatches of the last 30 years.

The Lange 1 is without question the manufacturer’s flagship model, and the big date function is its hallmark. Though found in watches like the Zeitwerk or the Langematik Sax-O-Mat, it’s in the Lange 1 that it’s shown to the greatest effect. Alongside other details such as asymmetrical sub-dials depicting the hours and sub-seconds, and the A. Lange & Söhne signature with its famous ampersand, it shows a clarity of vision that is wholly Lange. And while the Lange 1 has seen many versions, from a tourbillon to the Timezone, it’s the original that has become the symbol of the maison — and perhaps even the symbol of modern watchmaking itself. 

This particular watch, a Grand Lange 1, is a slightly upsized version of the classic. Dating to the 2020s, it features a 42mm rose gold case, a sapphire crystal, a signed crown, a polished bezel, a satin silver dial with spear handsets, and an exhibition case back. It’s fitted to a brown alligator leather strap with a signed rose gold pin buckle. 

Powering this masterpiece is the Lange & Söhne Caliber L901.2, a manual-winding movement that’s stunning to behold — and which can thankfully easily be viewed via the exhibition case back. In excellent condition, this piece is accompanied by all its goodies.

There are complicated watches, and then there are works of art. This is the latter.


Case is in outstanding condition overall showing only light signs of wear from gentle use. Satin silver dial with applied rose gold indices is in equally outstanding, as-new condition with matching ‘alpha’ handset. Sapphire display caseback. 18K signed crown.

Delivery & Returns

Standard Delivery (Est 1-3 Days) - Free

Our secure shipping service delivers Monday - Saturday between 8:00 a.m. and 6:00 p.m. For security purposes, every delivery requires an adult signature; Watches of Switzerland does not deliver to P.O. boxes nor third party forwarding services. To find out more about delivery, click here. Tracking information is available upon request.

If you have any questions or concerns regarding your order, Watches of Switzerland E-Commerce Team can be reached at 1-844-4-USAWOS (1-844-487-2967), option 1, during the following times (Eastern Time):

- Monday - Saturday: 9:00 a.m. – 7:00 p.m

- Sunday: 9:00 a.m. – 5:00 p.m

- Closed Easter Sunday, Thanksgiving Day and Christmas day

Alternatively, you can email the E-commerce team at

Returns Policy

Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.

10-Day Returns For Timepieces:

Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.

30-Day Returns For All Other Purchases:

All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.

On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.

All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.

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