Rolex 3075

Probable

The GMT-Master caliber of the transitional 16750. Still a geared 24-hour hand rather than an independent local hour hand — the independent hour arrives with the 3085 in the GMT-Master II, and that functional change, not the reference number, is what separates a GMT-Master from a GMT-Master II.

Specifications

Movement manufacturer: Rolex
Frequency: 28,800 vph (4 Hz)
Winding: automatic
Complications: Centre seconds · Date · 24-hour hand

Architecture

Automatic with centre seconds, date and a 24-hour hand, in the 30xx generation.

Related calibers

Succeeded by
Rolex 3085

References using this caliber

Rolex 16750Factory
GMT-Master · Whole production

Provenance of this record

Sources & Evidence

Secondary sourceCollector research

Rolex collector research on caliber transitions, dial generations and case marks

Rolex Forums, VRF and allied collector communities

Accessed: 2026-08-18

Cited for

This referenceProbable

Last verified: Not yet reviewed