Seiko Hand-wound 2220-3530 (November 1975) – Silver dial with patina

Rare, elegant vintage Seiko with a fine hand-wound movement and distinctive dial patina.

This Seiko hand-wound watch, Ref. 2220-3530, was produced in May 1975 (serial number 5Nxxxx). It belongs to a series of slim, finely crafted dress watches that Seiko developed exclusively for the Japanese market in the 1970s.

The silver dial was carefully cleaned after significant discoloration from age. This required removing the printed Seiko logo , resulting in a simple, modern aesthetic with an authentic patina . The surface displays a gently shifting interplay of silver and champagne tones.

The case is in very good condition and impresses with its striking geometry. The watch is fitted with a new, violet-tinted leather strap , which perfectly complements the warm vintage character of the dial while adding a modern touch.

⚙️ Technical specifications

• Brand: Seiko
• Reference: 2220-3530
• Serial number: 5Nxxxx
• Date of manufacture: May 1975
• Caliber: Seiko 2220 (manual winding, 24 jewels)
• Case material: Stainless steel
• Case size: 30.3 × 33.4 mm
• Lug-to-lug: 39.2 mm
• Height: 7.3 mm
• Lug width: 22 mm
• Weight: 39 g (including leather strap)
• Dial: Silver with even patina (without Seiko logo)
• Hands/indices: Silver-colored
• Glass: Acrylic glass
• Bracelet: New purple leather strap

⏱️ Features

• Hand-wound movement with 24 jewels
• Central display of hour, minute and second
• Diashock shock protection
  

🌏 Special features

• Original JDM model (日本国内モデル)
• Carefully cleaned dial with preserved patina
• Sleek, very flat housing with a height of only 7.3 mm
• New, color-coordinated leather strap (violet, modern and understated)
• Engraving on case back: Seiko, Stainless Steel, Serial number, 2220-3530, Japan-R with lightning symbol

🏛️ Background

The Caliber 2220 is one of Seiko's slim, hand-wound movements from the 1970s and was developed for elegant dress watches. These models combined Japanese precision with a simple, Western-inspired design.
The clock exemplifies the transition from the classic 1960s aesthetic to the clearer, more minimalist lines of the 1970s.

Warranty (used)
This is a used item. The limitation period for claims based on defects (statutory warranty) is 12 months from delivery.

Notice
As this is a pre-owned watch, water resistance cannot be guaranteed. To protect the movement, the watch should not come into contact with water or moisture.