The Wristwatch Field Guide

MB&F LM Thunderdome Tantalum (The Hour Glass)

Archive · used only

The MB&F LM Thunderdome Tantalum (The Hour Glass) is a discontinued watch with a tantalum case. It is priced well above the $2,150 median across the guide. The caseback is open, so the movement is visible. No longer offered new; listed here as an archive reference for the used market.

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Price
$295,000
Material
Tantalum
Grade / type
Tantalum
Water resistance
30 m
Type
Other
Case diameter
44.0 mm
Origin
Switzerland
Movement
Automatic, triple-axis tourbillon
Complications
Tourbillon
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
Openworked (fastest tourbillon)
Availability
No longer offered
Status
Archive (10 pieces, sold out)
Not published
Reference, Thickness, Lug-to-lug, Weight, Caliber, Power reserve, Hardness, Surface treatment, Matching bracelet, Lume
Medium confidence Verified Jul 2026 Source: MB&F (maker) / Revolution 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 MB&F LM Thunderdome Tantalum (The Hour Glass)?

The MB&F LM Thunderdome Tantalum (The Hour Glass) has a tantalum case with a sapphire caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the MB&F LM Thunderdome Tantalum (The Hour Glass)?

It is 44.0 mm in diameter, and water resistant to 30 m.

How much does the MB&F LM Thunderdome Tantalum (The Hour Glass) 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 $295,000 when current.

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