Hero background

All auctions / Watches & Clocks / Seiko "UFO" Chronograph, Ref. 6138

20d 1hCAMiller & Miller Auctions

Seiko "UFO" Chronograph, Ref. 6138

Seiko "UFO" Chronograph, Ref. 6138

Japanese. This Seiko Automatic Chronograph, Reference 6138, is known to collectors as the "UFO" due to its distinctively thick, saucer-like stainless steel tonneau case and hidden lug profile, creating the illusion of floating on the wrist. Designated by Seiko in period catalogues as the "Yachtsman", it features a dual-register black dial accented by orange sub-dial accents, a vertical day-date display at 3 o'clock, and an integrated tachymeter bezel. The movement is the celebrated Seiko Calibre 6138, a column-wheel, vertical-clutch automatic chronograph movement that introduced hand-winding capabilities alongside automatic winding. Fitted to a correct stainless-steel bracelet. Without box or papers.

Estimate:$285.52

To the auction

View all items fromMiller & Miller AuctionsorWatches & Clocks

Estimate:

$285.52

To the auction

Similar items

Auction results for similar items

ARMBANDSUR, Seiko, stål.
Sold

ARMBANDSUR, Seiko, stål.

10/22/2026

Helsingborgs Auktionskammare
SE

$30.2

Est: $40.44

Details
CITY Professional, armbandsur, automatisk, cal. ETA 2784, stål, 1970-tal.
Sold

Upcoming auctions

Masterpieces of Modern Art: Constructivism & Suprematism
Masterpieces of Modern Art: Constructivism & Suprematism auction house logo

NOV 8 | 1:00 PM

Masterpieces of Modern Art: Constructivism & Suprematism

Best of Auktion
Best of Auktion auction house logo

OCT 31 | 4:00 PM

Best of Auktion

Jewellery and Watches
Jewellery and Watches auction house logo

OCT 27 | 4:00 PM

Jewellery and Watches

Bring your auction to collectors worldwide!

Get listed now