The Wristwatch Field Guide

Gruppo Gamma Peacemaker Bronze

PN-20

The Gruppo Gamma Peacemaker Bronze is a current-production watch with a cusn8 marine bronze case. It is priced under the $1,500 median across the guide. The caseback is open, so the movement is visible.

All Gruppo Gamma watchesExotic-material other watchesBronzeDisplay backUnder $5,000
Price
$972
Material
Bronze
Grade / type
CuSn8 marine bronze
Water resistance
200 m
Reference
PN-20
Type
Other
Case diameter
43.0 mm
Thickness
13 mm
Lug-to-lug
52.5 mm
Origin
Singapore
Movement
Swiss Sellita SW219-1 hand-wound
Caliber
SW219-1
Power reserve
42h
Complications
Time only
Construction
Assembled
Caseback
Steel
Nickel-free
No (steel contact)
Bracelet / strap
Leather strap
Crystal
Sapphire
Display back
Yes
Dial
Blue gradient fume sandwich dial with small seconds
Dial colours
Grey Blue
Lume
Swiss Super-LumiNova Old Radium (green glow)
Availability
Offered
Status
Current
Not published
Weight, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Jul 2026 Source: Microbrand Store / Maker
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Frequently asked questions

Is the Gruppo Gamma Peacemaker Bronze nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the Gruppo Gamma Peacemaker Bronze?

The Gruppo Gamma Peacemaker Bronze has a cusn8 marine bronze case, though its caseback is steel. This is confirmed against the maker spec.

What size is the Gruppo Gamma Peacemaker Bronze?

It is 43.0 mm in diameter, 13 mm thick, 52.5 mm lug to lug, and water resistant to 200 m.

How much does the Gruppo Gamma Peacemaker Bronze cost, and is it available?

It is current-production and lists from $972.

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