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Orbis Collectibles

Sinn — Instrument Chronographs

Also known as: Instrument Chronographs

DocumentedSupported by at least one credible specialist source.

Record status

Documented family · partial

Maker / issuer

Sinn

Instrument Chronographs is a wristwatch family made by Sinn. Recorded movements are ETA caliber 7750 and Sellita caliber SW500-1, with functions including hours, minutes, small seconds, date, day and chronograph.

The sampled references record case diameters of 38.5–41 mm, heights of 15–15.5 mm, cases in stainless steel and water resistance of 100–200 m. Reference examples: ref. 103.031 (Pilot Chronograph 103 St; 41.00 mm); ref. 356.0721 (Chronograph 356 Sa Pilot III; 38.50 mm).

Evidence at a glance

Linked sources
2
Photograph views
3
Catalogue references
3

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Physical characteristics

Bezel
Rotating, 60-0 (Pilot)
Crystal
Plexi, Sapphire
Case back
Closed, Open
Lug width
20 mm
Case shape
Round
Case height
15–15.5 mm
Case materials recorded
Stainless Steel
Case diameter (sampled references)
38.5–41 mm

Technical characteristics

Functions recorded
Hours, Minutes, Small Seconds, Date, Day, Chronograph
Movements recorded
ETA caliber 7750 · Sellita caliber SW500-1
Water resistance recorded
100–200 m

Design

Hour markers
Arabic Numerals
Dial colours recorded
Black, Silver

Identification

How to identify
The reference number, usually found on the case back, between the lugs or on papers, ties a watch to one of these configurations; movement calibre, case material and dial together separate references within the family.
Family as listed
Instrument Chronographs
References sampled
103.031 — Pilot Chronograph 103 St · 356.0721 — Chronograph 356 Sa Pilot III
Distinguishing features
Reference number, movement calibre, case material and dial colour together
Representative reference
103.031
Source note
All figures follow WatchBase and describe only the references sampled here; they have not been checked against the manufacturer's archive. WatchBase, an online database of watch references, lists 49 references under this family name; this entry summarises 2 of them, chosen across that list, including the reference originally recorded for this entry. The reference list, calibres and case specifications summarised above come from WatchBase; the manufacturer's own archive or a printed reference work should be consulted before treating any detail as definitive. WatchBase does not record production years for the references sampled here, so the family's introduction date and production span remain Research Required.

Catalogue references

Varieties

  • Ref. 103.031 — Pilot Chronograph 103 St

    ETA caliber 7750; 41.00 mm stainless steel; Black dial. Source: WatchBase.

  • Ref. 356.0721 — Chronograph 356 Sa Pilot III

    Sellita caliber SW500-1; 38.50 mm stainless steel; Silver dial. Source: WatchBase.

Research required

  • Research Required: confirm the family's introduction date, full reference list and production span against the manufacturer's archive or a printed reference; WatchBase figures cover only the sampled references.
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