Vintage 1968 JAPAN SEIKO SKYLINER 6220-8010 21Jewels Hand-winding.

Vintage 1968 JAPAN SEIKO SKYLINER 6220-8010 21Jewels Hand-winding.

Welcome to my auction!
I am Japanese who live in Tokyo.

Item description

Movement :

• Pet name : SKYLINER .
• Caliber number : 6220B,C.
• Movement : Hand-winding.
• Beat rate : 18000bph.
• Year of manufacture start : 1961's.
• Factory : Suwa.

Externals :

• Serial number : 829843.
• Dial number : JAPAN 6220-8030U AD.
• Glass : Acrylic.
• Case size : About 38.1mm.
• Lug width : 18mm.
• Band : Wrist size that can be worn is Up to about 190mm.

Condition :

• Used, it runs well.
• The day difference time of an used watch is about +-1 minute / day.
• For practical, everyday use, it would be advisable to have the movement cleaned and oiled.

Key Features

The Sovereign Benchmark of 1968 Slim Manual-Wind Luxury (1968): Manufactured in **1968**—a landmark historical year during Japan's mid-Showa industrial expansion—the **Seiko Skyliner** reference **6220-8010** represented Suwa Seikosha's definitive statement in ultra-slim dress watch architecture. Engineered as an elegant alternative to heavier automatic models, the Skyliner line offered minimalist, high-grade sophistication for corporate executives during the prime era of mechanical Japanese watchmaking.

The Over-Engineered 21-Jewel Caliber 6220 Manual Heart: Powering this historic timepiece is the revered **21-jewel Caliber 6220A**, an in-house manual-wind movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. Celebrated by vintage purists for its exceptionally flat movement profile and long-term daily stability, this caliber deploys a lavish **21-jewel specification** across gear-train pivots to minimize mechanical friction, complete with Seiko's **Diashock** anti-shock system.

Architectural ""8010"" Grammar of Design Case Geometry: The reference **6220-8010** is globally distinguished among collectors for its early implementation of Taro Tanaka's **""Grammar of Design""** guidelines. Executed in solid stainless steel, the case features sharp, multifaceted angular lugs, zero-distortion mirror-polished Zaratsu bevels, and a sleek, low-profile bezel. This slim profile allows the mechanical instrument to rest completely flush against the wrist, sliding effortlessly under a tailored executive shirt cuff.

Immaculate Non-Date Dial Symmetry and Fine Cursive Typography: The dial of the **6220-8010** is a masterclass in late-1960s visual restraint. Free from calendar window clutter, the brilliant silver sunburst canvas showcases **hand-applied, multifaceted rectangular block hour markers** with a double index at 12 o'clock and sharp dauphine hands. The dial is gracefully adorned with the iconic stylized **""Skyliner""** cursive typography, **""21 JEWELS""** designation, and Suwa Seikosha factory crest above 6 o'clock.

An Investment-Grade Masterpiece of Suwa's Manual Legacy: Produced during the milestone mechanical year of **1968**, the 6220-8010 21-jewel Seiko Skyliner remains an uncommonly clean, highly sought-after cornerstone reference for serious vintage Seiko purists. Capturing the precise historical moment where Suwa Seikosha perfected high-utility manual-wind dress watches before the global industry shift toward quartz technology, it stands as an eternal heirloom of Japanese horological history.

For more information, please look at the pictures.

Notes

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