The Bronze Field Guide

Lum-Tec M54 Bronze

Archive · used only

The Lum-Tec M54 Bronze is a discontinued watch with a solid cusn8 bronze case. At 150 g it sits among the heavier watches in the guide, and is priced under the $895 median across the guide. No longer offered new; listed here as an archive reference for the used market.

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Price
$790
Alloy
CuSn8 bronze
Weight
150 g (with strap)
Water resistance
300 m
Type
Other
Case diameter
44.0 mm
Thickness
14.5 mm
Origin
United States
Movement
Japanese automatic
Caliber
Seiko NH35
Power reserve
41 hours
Complications
Date
Construction
Assembled
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Leather and rubber straps
Crystal
Sapphire
Display back
No
Dial
Brown
Dial colours
Brown
Lume
MDV 8-layer lume
Availability
No longer offered
Status
Archive, limited to 200 pieces
Not published
Reference, Lug-to-lug, Colour, Hardness, Surface treatment, Caseback, Bronze bracelet
Medium confidence Verified Jul 2026 Source: Princeton Watches / Blade HQ
Facts are free to cite with a link.
See it in the interactive guide

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Frequently asked questions

What bronze alloy is the Lum-Tec M54 Bronze?

The Lum-Tec M54 Bronze has a solid cusn8 bronze case. It is recorded at medium confidence pending a maker-stated alloy.

What size is the Lum-Tec M54 Bronze?

It is 44.0 mm in diameter, 14.5 mm thick, and water resistant to 300 m.

How much does the Lum-Tec M54 Bronze weigh?

About 150 g (w/ strap).

How much does the Lum-Tec M54 Bronze cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market, and it listed from $790 when current.

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