Oriosa Diver's Chronograph Wristwatch
Record status
Individual type · partial
Period
1960s
This 1960s men's diver's chronograph wristwatch by Oriosa features a chromium-plated case with a stainless steel screw-down case back, measuring 38 mm in diameter excluding the crown, pushers, and lugs.
The source reports it is powered by a 17-jewel Landeron 248 hand-winding movement. The watch includes a bi-directional rotating black bezel and a signed dial retaining what the dealer notes as its original finish and hands. The dial configuration provides two sub-dials: running continuous seconds and a 30-minute recorder marked with elongated three-minute interval indicators historically associated with timing long-distance telephone calls.
A replacement leather strap is fitted.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Chronograph
- Bezel
- Bi-directional rotating bezel
- Strap
- Later leather strap
- Movement
- 17-jewel Landeron 248 hand-winding
- Case diameter
- 38mm excluding crown, buttons and lugs
- Case material
- Chromium plated with stainless steel screw-on back
- Place recorded
- Switzerland
- Maker / attribution
- Oriosa
Design
- Visible features
- • Black rotating bezel calibrated with numerals at ten-minute intervals and dot at twelve • Silvered dial with two sub-dials and rectangular applied hour markers • Dial signed 'ORIOSA SWISS' and '20 ATM INCABLOC 17 JEWELS' • Fitted with a black textured leather strap featuring contrasting white stitching
- Dial Configuration and Display
- The dial layout incorporates two subsidiary registers: one for continuous running seconds and another tracking elapsed time up to 30 minutes. This 30-minute recorder features large markers at three, six, and nine minutes, which the seller states were designed to assist with monitoring three-minute billing increments on international telephone calls. Visual observation records that the dial is signed 'ORIOSA SWISS' and '20 ATM INCABLOC 17 JEWELS', featuring applied rectangular hour markers. The dealer reports that the dial retains its original finish along with original hands and chronograph, while noting light surface marking on the dial and a couple of small marks on the lens detectable with a loupe.
- Movement, Dating, and Accessories
- Internal caliber details rely entirely on dealer statements, as uncased movement photography is not included in the record. The listing states the watch is powered by a 17-jewel Landeron 248 hand-winding movement. The dealer dates the watch to the 1960s, while the platform's cataloguer note categorizes the period as 1940–1960. The watch is fitted with a later replacement leather strap and is accompanied by a new presentation box.
- Case Construction and Exterior Specifications
- The timepiece features a chromium-plated mid-case paired with a stainless steel screw-on case back. It measures 38 mm in diameter, excluding the winding crown, buttons, and lugs. Mounted to the case is a bi-directional rotating bezel. The seller notes that while the case back states the watch is waterproof, vintage watches should be kept clear of moisture unless specifically tested. Surface wear is described by the dealer as general light surface marking.
Identification
- 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.
Research required
- Research required: Movement is not shown uncased in the provided photographs; Landeron 248 caliber identification is source-reported
- Research required: Case back inscriptions are not visible in the primary front image