JJF (also written JF) is a label that appears in public dealer write-ups on a spread of brands rather than one line: Longines Master Collection, Breitling Navitimer, a Rolex Yacht-Master reference and an Audemars Piguet Royal Oak Offshore. That spread is itself the observation worth keeping, because it cuts against the tidy story that each workshop owns one brand. None of the listings in our own sample carries this label.
On this page
Is JJF Factory still making watches?
A label used in public dealer write-ups on Longines, Breitling, Rolex and Audemars Piguet references. No listing in our own sample carries it. This profile carries 4 reported brand lines, 2 signature references and 2 cited sources, with 4 open questions listed below.
What is JJF Factory known for?
This page records 2 points of note for JJF Factory, alongside 4 reported brand lines and 2 signature references, while what the trade repeats without a dated public document is kept separate further down the page.
- A spread of brands rather than a single line in dealer write-ups
- Longines and Breitling references, which the Rolex-line labels do not cover
Which brands does JJF Factory build?
The trade associates the JJF Factory label with 4 brand lines, listed below; the source for the mapping is cited at the foot of this page.
- Longines — Master Collection references
- Breitling — Navitimer references
- Rolex — Yacht-Master references
- Audemars Piguet — Royal Oak Offshore references
Which models is JJF Factory known for?
This profile lists 2 signature references for JJF Factory, each resting on a listing observation or a cited test, with its basis noted beside it and its sources at the foot of the page.
- Longines Master Collection — Named in dealer write-ups on this label (Dealer article series naming this label, 2026)
- Breitling Navitimer — Also named under this label (Dealer article series naming this label, 2026)
Which name gets confused with JJF Factory?
Commonly conflated here: JJF and JF, separated by the checks in the table below, whose sources are cited at the foot of this page.
| Name | Name it gets confused with | What to check |
|---|---|---|
| JJF | JF | Two spellings of what appears to be one label; both forms appear in public write-ups. |
What has not been verified?
The following is commonly repeated about JJF Factory in the trade, and none of it is documented in public, so this site leaves it as unknown. 4 points are carried below as open questions, each one waiting on a dated source before it can be stated as fact:
- Production status and ownership
- Whether JJF and JF are the same operation
- Movement supply for the references written about under this label
- Any listing in our own sample: none carries this label
Sources on this page
This profile rests on the 2 sources listed below, dated and linked where an original exists, and any claim about JJF Factory without a dated public source is carried above as an open question.
- dealer article · 2026 · Dealer article series naming this label on Longines, Breitling, Rolex and Audemars Piguet references, 2026
- market observation · 2026-10-01 · Label search across our own price sample, 2026-10-01
Reviewed 2026-10-01. If a source here is wrong or has been superseded, the correction is published on this page. See About.