"Blancpain 2021-3630-55 Limited Edition Classic 18k Rose Gold 36mm ~1999 WXO"

"Exuding understated elegance, the Blancpain Classic Ultra Slim reference 2021-3630-55 offers a rarity in the world of fine watchmaking: a manual-wind dress watch in 18k rose gold, limited to 300 pieces, and measuring a refined 36 mm in diameter. Introduced in the late 1990s, it stands as both a minimalist aesthetic and a collector’s find.
D-Timepieces
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Dixon Watch Co
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Key Features

Model: Classic Ultra Slim Limited Edition

Reference: 2021-3630-55

Case Size: 36 mm

Case Material: 18k Rose Gold (Solid)

Movement: Manual-wind calibre (likely based on F.Piguet Cal. 21) — ultra-thin design for dress-watch proportions.
D-Timepieces
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Dial & Design: Black dial (in many examples) with applied Breguet-style Arabic numerals at 12, 3, 6 & 9; distinctive stepped case machining lending vintage charm.
loupethis.com
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Edition: Limited run of just 300 pieces in this configuration.
D-Timepieces

Functions: Hours, Minutes; ultra-slim case height (~6.2 mm) makes for elegant wear.
D-Timepieces

Year & Condition

Circa ~1999／Late-1990s Model. Excellent pre-owned condition — the case appears sharp, with classic proportions preserved and the design lines intact. The listing is for Watch Only (WXO) — no box or papers included.
Dixon Watch Co
+1

Inclusions

Watch Only — No Original Box and No Warranty Papers.

Warranty

Includes 12-Month Warranty by Martha & Kozma covering timekeeping accuracy and mechanical operation.

Closing Sentence

A beautifully restrained blend of vintage proportions, precious metal craftsmanship, and selective rarity — this Blancpain 2021-3630-55 is a sophisticated option for the dress-watch collector seeking subtle luxury and refined heritage."