Franck Muller
Franck Muller Crazy Hours 7851 7851CH
The Franck Muller Crazy Hours 7851 (reference 7851CH) is a white gold watch.
Specifications
Case
- Reference
- 7851CH
- Collection
- Crazy Hours
- Case material
- White gold
Dial versions
This reference was made with these dials and finishes.
7851CH Blue
Blue
7851CH White
White
How it compares within the Crazy Hours family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 7851CH (This watch) | — | White gold | — | — | — |
| 1200CHD | — | White gold with diamond bezel | — | — | — |
| 5850CH | — | White gold | — | — | — |
| 5850CHCODR | — | Rose gold | — | — | — |
| 7850CH | — | Rose gold | Silver | — | — |
| 7850CHCODR | — | Rose gold | Blue | — | — |
About the Crazy Hours family
Crazy Hours, introduced in 2003, is one of Franck Muller's best-known complications. The hour numerals are placed out of order around the dial, and the hour hand jumps to the correct numeral each hour, while the minute hand moves normally. It is a playful idea built on a real mechanical complication.
The catalog includes Crazy Hours in the Cintrée Curvex case (references such as 5850CH and 7850CH) and in the rectangular Long Island case, in rose gold and white gold, some with diamond-set bezels. Buyers check that the hour hand jumps cleanly at each hour and that the dial and case match the reference.
Quick answers
- What is the Franck Muller Crazy Hours 7851 7851CH made of?
- The case is white gold.
- Which dials was the Franck Muller Crazy Hours 7851 7851CH made with?
- The catalog lists 2 dials: Blue, White.
Catalog facts checked October 2026.