Shanghai A581 Wristwatch

Technical characteristics

Type

Hand-wound wristwatch

Movement

Caliber 581, manual-wind, 17 jewels, non-shock resistant

Lug Width

18 mm

Case Width

34 mm

Model Name

Shanghai A581

Case Material

Semi-steel with stainless steel back

Place recorded

China

Maker / attribution

Shanghai Watch Factory

Production Date Note

1964 estimated from 6404A movement engraving

Design

Visible features

• Silvered/light dial with applied gold-tone hour markers and matching hands • Seconds hand features an arrow or colored accent tip • Mounted on a textured dark leather strap • Round metallic case with crown positioned at 3 o'clock

Dial and Exterior Presentation

Visual observation shows a light silvered dial with applied gold-tone hour markers and matching hands, as well as a central seconds hand featuring an arrow or colored accent tip. In the auction text, the seller describes the face as a '珍しい格子模様盤' (unusual lattice-patterned dial) and notes that while there is some soiling, it is in relatively good condition for its age ('文字盤状態： 珍しい格子模様、少し汚れ有りますが年代的には綺麗な方だと思います。'). The round metallic case features a winding crown at the 3 o'clock position, which the seller states bears a Shanghai logo ('リューズ： "上海ロゴ"有り。'). For the crystal, the seller identifies an acrylic fitting with a small crack near the 11 o'clock index ('風防： アクリル風防、11時付近に小さい亀裂が有ります。').

Condition and Documentation Limitations

In the primary photograph provided, only the front face of the watch is visible; the movement, internal '6404A' engraving, and caseback exterior are not pictured and cannot be directly corroborated. Statements regarding internal markings and timekeeping rely entirely on the seller's description. The seller categorizes the overall item condition as having scratches and dirt ('商品の状態 傷や汚れあり') and notes that the movement is running but tends to run slightly fast ('動品（少し進みがち）'). Factory production records are not provided in the source to confirm the inferred 1964 date.

Reported Movement and Case Construction

The listing documents the movement as a manual-wind Caliber 581 with 17 jewels and no shock protection ('機械： 581、手巻き、17石、耐震なし'). The seller infers a production date of 1964 from an internal movement stamp reported as 6404A ('年代： 1964年（機械に6404Aの刻印から推測）'). According to the listing measurements, the case width is 34 mm with an 18 mm lug width ('ケース幅： 34mm', 'ラグ幅： 18mm'). Case construction is listed as semi-steel with a stainless steel back ('ケース材質： 半鋼 (ステンレスバック）'). It is fitted with a pre-owned Maruman leather strap ('バンド： 中古品、Maruman製。').

Identification

Reference

A581

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.