Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 1

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 2

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 3

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 4

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 5

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 6

Thumbnail [WTS] Omega Speedmaster 3521.80 — Triple Date 39mm Blue Dial Automatic Chronograph – $1,599 7

Model:	Omega Speedmaster	Last Scraped:	Nov. 1, 2025, 1:47 a.m.
Username:	Silver_Dealer_4932	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Condition: Light surface wear on case and bracelet. No dents or deep scratches. Crystal is clean. Crown and pushers operate smoothly, and the automatic chronograph runs well. Bracelet brushing intact with light desk wear, clasp closes securely. Accessories: Watch only + Sized for a 7.2” wrist. Price: $1,599 (Zelle or Wire). Apple Pay +15 | Venmo +25 Shipping: Buyer provides shipping label or $50 for a fully insured Fed ex 2 day label. Timestamp: Included in photos above. Overview: Omega Speedmaster Triple Date (Ref. 3521.80) featuring a 39mm stainless steel case, blue sunburst dial with triple calendar (day, date, month), and warm patina on gold-tone accents. Powered by the Omega Calibre 1151 automatic chronograph (Valjoux 7751 base). Complete with signed Omega bracelet and clasp.

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Highest:	$14,250	Lowest:	$3
Median:	$5,000.00	Std. Dev:	±$2,645.11

Estimated Private Party Value $2,950 — $7,250


	Established:	1848
	Website:	https://www.omegawatches.com/
	Country of Origin:	Switzerland

Founded at La Chaux-de-Fonds, Switzerland in 1848 by 23-year-old Louis Brandt who assembled key-wound precision pocket watches from parts supplied by local craftsmen. He travelled throughout Europe selling his watches from Italy to Scandinavia by way of England, his chief market. After Louis Brandt's death in 1879, his two sons Louis-Paul and Cesar, troubled by irregular deliveries of questionable quality, abandoned the unsatisfactory assembly workshop system in favour of in-house manufacturing and total production control. Due to the greater supply of manpower, communications and energy in Bienne, the enterprise moved into a small factory in January 1880, then bought the entire building in December. Two years later the company moved into a converted spinning-factory in the Gurzelen district of Bienne, where headquarters are still situated today. Their first series-produced calibres, Labrador and Gurzelen, as well as, the famous Omega calibre of 1894, would ensure the brand's marketing success.

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