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The Encyclopedia of Horology

Wristwatch · Dress watch

Omega Ultra Slim wristwatch

Partially verified

This Omega wristwatch is a vintage dress watch featuring an ultra-slim profile. Produced circa 1970, the watch is housed in a 14-karat gold case measuring 33 mm in diameter, excluding the winding crown. The case features a heavy snap-on back with an engraved 14K marking. The silver-colored dial is appointed with gold-tone linear indices and thin black hands. Internally, the watch is powered by an Omega Caliber 620 manual-wind mechanical movement, which contains 17 jewels. The watch is presented on a dark brown leather strap manufactured by Hirsch. The auction description reports that the movement exhibits smooth operation and appropriate mechanical performance, while the dial remains clear of significant aging or wear. The specifications provided are based on documentation published by the seller and do not constitute an independent technical assessment or certificate of authenticity.

Front view of the Omega Ultra Slim wristwatch with gold case and leather strap.
Front view of the Omega Ultra Slim wristwatch with gold case and leather strap. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Dress watch
Maker / attribution
Omega
Reference
Not recorded
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1970
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch case is constructed from 14-karat gold with a reported diameter of 33 mm. It features a heavy, snap-on case back which includes a stamped 14K mark to denote the gold purity. The aesthetic is characterized by a minimalist, thin profile.

The dial is finished in silver and features gold-tone linear indices paired with slender black hands. The overall design follows the dress watch aesthetic prevalent during the late 1960s and early 1970s. The auction description reports that the dial surface does not show signs of significant aging.

Evidence for this section
  • “بدنه ساعت از جنس طلای ۱۴ عیار ساخته شده و قطر آن بدون احتساب دسته‌کوک ۳۳ میلی‌متر گزارش شده است”
  • “قاب پشتی آن از نوع فشاری و سنگین (Heavy snap-on) بوده که نشان حک‌شده 14K بر روی آن به چشم می‌خورد”
  • “صفحه ساعت به رنگ نقره‌ای بسیار شکیل با نشانگرهای خطی طلایی و عقربه‌های باریک مشکی طراحی شده است”

Movement and Performance

Internally, the watch is equipped with the Omega Caliber 620. This manual-wind, ultra-slim mechanical movement is fitted with 17 jewels. It is noted for its slim profile, designed to accommodate low-profile watch cases.

According to the information provided by the seller, the movement currently functions with smooth operation. There are no available records regarding the history of specialized technical servicing.

Evidence for this section
  • “موتور مکانیکی کوکی کالیبر 620 (Caliber 620) امگا با ۱۷ سنگ جواهر قرار گرفته است”
  • “این کالیبر دستی و باریک از موتورهای نام‌آشنا و موفق امگا در ساخت ساعت‌های مچی فوق‌باریک در آن دوره تاریخی بوده”

Provenance and Documentation

The watch is attributed to circa 1970 based on the provided source documentation. It is supplied with a dark brown leather strap by the manufacturer Hirsch.

The auction house states that the provided technical information and descriptions are based on documents published by the seller. These details are not the result of an independent technical test or verification by the catalogue provider.

Evidence for this section
  • “طبق منبع در حدود سال ۱۹۷۰ میلادی تولید شده است”
  • “به همراه این ساعت، یک بند چرمی قهوه‌ای تیره ساخت برند هیرش (Hirsch) قرار داده شده است”
  • “توصیفات، مشخصات و ادعاهای فنی فوق صرفاً بر پایه مستندات و اطلاعات منتشرشده توسط فروشنده گردآوری شده‌اند”

Open research questions

  • What is the specific case reference number associated with this Omega 14K gold Caliber 620 model?
  • Can the production year be narrowed down by checking the specific serial number on the movement against Omega records?

Source evidence

Recorded claims and source quotations for Omega Ultra Slim wristwatch
FieldSource-reported valueSource quotation
MakerOmega“ساخت شرکت سوئیسی امگا (Omega)”
Case Material14K gold“بدنه ساعت از جنس طلای ۱۴ عیار ساخته شده”
Case Diameter33 mm“قطر آن بدون احتساب دسته‌کوک ۳۳ میلی‌متر گزارش شده است”
MovementOmega Caliber 620“موتور مکانیکی کوکی کالیبر 620 (Caliber 620) امگا با ۱۷ سنگ جواهر”
CasebackSnap-on“قاب پشتی آن از نوع فشاری و سنگین (Heavy snap-on) بوده”
StrapHirsch“یک بند چرمی قهوه‌ای تیره ساخت برند هیرش (Hirsch) قرار داده شده است”

Visible details

  • 33 mm gold case
  • 14K gold marking visible on caseback
  • Hirsch leather strap
  • Gold-tone linear hour indices on a silver-colored dial

Research qualifications

  • Absence of specific documentation regarding service history
  • Unverified manufacturing exactness beyond the stated circa 1970 date

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی وینتیج Omega قاب طلا ۱۴ عیار اولترا اسلیم کالیبر 620

Reviewed 2026-11-02 · Record 182ac0795c

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