Corum 55522 - Onyx and Coral Dial

The dial is already rare. Then there’s the lug construction

This Corum from the 1970s exists for one reason: materials. Onyx paired with natural coral is one of the rarest dial executions Corum ever produced. Stone dials were difficult enough on their own. Coral made things exponentially harder. Most never made it out of production intact, and even fewer survived decades of wear and service.

What pushes this example further is the triple lug construction. The two spring bars per side setup is rarely seen and was used on a very small number of Corum jewelry references. It was engineered for stability and balance, but it added complexity and cost. Many were later simplified or altered. Seeing this lug configuration still present matters.

You can tell Corum was having fun with this one

You are no longer allowed to use coral as it is an endangered material, making this watch even more special and impossible to replicate in todays world. The triple lug design reinforces that this was not a standard production watch. It was a high jewelry execution built without shortcuts during Corum’s most experimental period.

What you need to know before wearing it

The watch is in good vintage condition. The coral dial has a visible crack between four and five o’clock, but the onyx is in great shape. The case shows wear consistent with age. The crystal is in good condition. The original hardware shows oxidation consistent with age. The watch is confirmed to be running well after passing by our test bench. 

None were known to survive, until now

This is not a condition driven piece. It is a rarity driven one. The onyx and coral dial alone places it far outside normal vintage offerings. It's for someone who values unusual materials, obscure executions, and watches that were never meant to be common. It's exactly what a stone dial Corum from this era should be.

Every watch we offer has been authenticated and mechanically looked over to ensure immediate usability.