Herbert
2
GP 4900 works
I have a GP 4900. (Ref4910).
Can anyone tell me what work this watch is using?
Plus I have stamped on the bach N?A - 1021
What does this mean? Limited edition?
Reference Guide
Explore the rare Girard Perregaux Ref. 2598 chronograph with its Yves-Klein blue dial and cushion case. Discover its limited production, dial complexities, and collector insights.
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