The Wristwatch Field Guide

Gronefeld 1941 Gronograaf Tantalum

Archive · used only

The Gronefeld 1941 Gronograaf Tantalum is a discontinued chronograph watch with a tantalum case. It is priced well above the $5,150 median for the category. The caseback is open, so the movement is visible. No longer offered new; listed here as an archive reference for the used market.

Exotic-material chronograph watchesDisplay back
Price
$180,000
Material
Tantalum
Grade / type
Tantalum
Water resistance
30 m
Type
Chronograph
Case diameter
40.0 mm
Thickness
11.3 mm
Origin
Netherlands
Movement
Manual, column-wheel chronograph
Caliber
Calibre G-04
Power reserve
56 hours
Complications
Chronograph
Colour
Grey
Construction
Assembled
Caseback
Sapphire
Nickel-free
Not verified (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Leather strap
Crystal
Sapphire
Display back
Yes
Dial
Frosted
Availability
No longer offered
Status
Archive (25 pieces, sold out)
Not published
Reference, Lug-to-lug, Weight, Hardness, Surface treatment, Matching bracelet, Lume
High confidence Verified Jul 2026 Source: Gronefeld (maker) / GPHG Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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Frequently asked questions

What is the case material of the Gronefeld 1941 Gronograaf Tantalum?

The Gronefeld 1941 Gronograaf Tantalum has a tantalum case with a sapphire caseback. This is confirmed against the maker spec.

What size is the Gronefeld 1941 Gronograaf Tantalum?

It is 40.0 mm in diameter, 11.3 mm thick, and water resistant to 30 m.

How much does the Gronefeld 1941 Gronograaf Tantalum 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 $180,000 when current.

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