The Titanium Field Guide

Isotope Old Radium Bronze Tobacco

Archive · used only

The Isotope Old Radium Bronze Tobacco is a discontinued field watch with a cusn8 bronze case. The caseback is open, so the movement is visible. No longer offered new; listed here as an archive reference for the used market.

All Isotope watchesWatch field watchesMicrobrandUnder 11 mm thickDisplay back
Material
Bronze
Grade / type
CuSn8 bronze
Water resistance
100 m
Type
Field
Price
– · Maker page shows OutOfStock at $0.00; a sold-through 100-piece limited edition with no last recorded price.
Case diameter
40.0 mm
Thickness
10.1 mm
Lug-to-lug
47 mm
Origin
United Kingdom
Movement
Automatic, self-winding
Caliber
Swiss Landeron
Power reserve
40 hours
Complications
Time only
Construction
Assembled
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
20mm quick-release Italian calfskin strap (or a bespoke Marine Nationale strap, handmade in Barcelona by Didymostraps) with a brushed bronze buckle
Crystal
Anti-reflective sapphire
Display back
Yes
Dial
No-date textured dial with Old Radium luminescent numerals and indexes
Lume
Old Radium luminescent coating
Availability
No longer offered
Status
Discontinued; limited edition of 100, sold out
Not published
Reference, Weight, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Sep 2026 Source: Isotope (maker product page)
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Isotope Old Radium Bronze Tobacco?

The Isotope Old Radium Bronze Tobacco has a cusn8 bronze case with a titanium caseback. This is confirmed against the maker spec.

What size is the Isotope Old Radium Bronze Tobacco?

It is 40.0 mm in diameter, 10.1 mm thick, 47 mm lug to lug, and water resistant to 100 m.

How much does the Isotope Old Radium Bronze Tobacco cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market.

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