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Seiko The Golden Heart

The Mood There is a quiet tenderness in how this heart-shaped frame rests against the skin—not as a tool for counting minutes, but as a small, gilded sentiment.

Case: 22 mm
Lug to Lug: 26 mm
Bracelet: 8 mm
Max Wrist: 20.4 cm

Super Rare · Circa 1990s

Will it fit? How to measure your wrist

Wrap a strip of paper or a soft tape snugly around your wrist, just below the wrist bone. Mark where it overlaps, then measure that length in centimetres.

If your wrist is the same as or smaller than the Max Wrist size above, it should fit. A watchmaker can usually shorten a vintage bracelet, but extra links are rarely available.

Not sure? Send us your wrist size on WhatsApp.

What our condition grades mean

Excellent: Minimal signs of wear, visible only on close inspection.
Very Good: Light surface wear consistent with age, such as fine hairline scratches. Nothing that affects wear or function.
Good: Visible signs of age, such as scratches or patina, all shown in the photos. Fully functional.

Every watch is checked for function and timekeeping before it is listed, and the photos show the actual piece.

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SpecificationsThe Details

Brand	Seiko
Case width	22 mm
Lug to lug	26 mm
Lug/Bracelet width	8 mm
Max wrist size	20.4 cm
Case material	Gold-plated Base Metal with Stainless Steel Back
Dial	Stark matte white with minimalist baton indices and ‘Harmony’ signature
Crystal	Hardlex
Movement	Japan Quartz Cal. 1F20
Production era	Circa 1990s
Condition	Super Rare

The StoryAbout This Piece

The Mood There is a quiet tenderness in how this heart-shaped frame rests against the skin—not as a tool for counting minutes, but as a small, gilded sentiment. The polished honey-gold case catches the soft glow of the afternoon sun, its smooth curves inviting a touch that feels far more personal than industrial. It is a watch that belongs on a wrist holding a handwritten letter, a delicate reminder that time is often a matter of the heart.

The Heritage Part of the elusive ‘Harmony’ series, this 1f20-5F10 represents Seiko’s specialized venture into high-art feminine timepieces during the late 20th century. The 1F20 movement is a marvel of miniaturization, engineered by Seiko’s workshops to maintain high-precision quartz reliability within a case no larger than a charm. While the watch world often obsesses over rugged steel, this “Super Rare” heart-shaped survivor speaks to a time when Japanese design focused on the absolute poetry of form. Now paired with a slender obsidian-textured leather strap, it provides a striking contrast that makes the warm aurum of the case truly sing.

There is a quiet tenderness in how this heart-shaped frame rests against the skin—not as a tool for counting minutes, but as a small, gilded sentiment. The polished honey-gold case catches the soft glow of the afternoon sun, its smooth curves inviting a touch that feels far more personal than industrial. It is a watch that belongs on a wrist holding a handwritten letter, a delicate reminder that time is often a matter of the heart.

Part of the elusive ‘Harmony’ series, this 1f20-5F10 represents Seiko’s specialized venture into high-art feminine timepieces during the late 20th century. The 1F20 movement is a marvel of miniaturization, engineered by Seiko’s workshops to maintain high-precision quartz reliability within a case no larger than a charm. While the watch world often obsesses over rugged steel, this “Super Rare” heart-shaped survivor speaks to a time when Japanese design focused on the absolute poetry of form. Now paired with a slender obsidian-textured leather strap, it provides a striking contrast that makes the warm aurum of the case truly sing.