Small batch. Military inspired. Swiss made.
TENET 857/52 — Clearance Diver 200m
In the double pack — £400 depositThe name
857/52
In 1952, an Admiralty order formally established the Royal Navy Clearance Diving Branch — turning wartime improvisation into a permanent profession, with its own training, its own standards, and its own crest.
857/52 reads like what it is: an entry in a ledger. Order 857 of 1952. The most meaningful name we could give our diver's watch was the piece of paper that made the profession exist.
The 857/52 is both a tribute and a continuation.
Read the full story
Royal Navy clearance diver crest
The watch
Clearance Diver 200m
A Swiss-made mechanical diver, built in small numbers — named after the order that created the branch and carrying the clearance diver crest on its caseback.
- Brushed steel case
- Matte anti-reflective dial
- 200 m / 660 ft water resistance
- Swiss-made mechanical movement
- 60-minute dive bezel
- Aged-lume dial plots
First batch
Join the first batch
The 857/52 is available in the limited edition double pack, alongside the 3334/SW.
Reserve the double pack
A deposit secures your place in the first batch — fully refundable until dispatch, and deducted from the final price. Allocations are confirmed in order of deposit.
Not ready to commit? Leave your details and a line about yourself — you'll hear about the launch before anyone else.