Omega Speedmaster Perpetual Calendar Yellow Gold / Champagne / 3650.10.20
The Omega Speedmaster Perpetual Calendar is a limited edition of 50 pieces created for the Japanese market in 1991, honoring the 700th anniversary of Switzerland. It is powered by caliber 1160, which is housed in a yellow gold case of 39mm. It was available with either a yellow gold bracelet or a brown alligator…
| Reference | 3650.10.20 |
|---|---|
| Collection | Speedmaster (Non-Moonwatch) |
| Case diameter | 39 mm |
| Case material | Yellow Gold |
| Bezel | Tachymeter |
| Case shape | Round |
| Case back | Closed |
| Lug width | 18.00 mm mm |
| Movement | Omega caliber 1160Hours |
| Water resistance | 100 m |
| Dial colour | Silver |
| Indexes | Stick / Dot |
| Hands | Stick |
| Crystal | Sapphire |
| Year introduced | 1991 |
| Limited edition | Yes |
This is a reference-catalog entry for the Omega Speedmaster Perpetual Calendar Yellow Gold / Champagne / 3650.10.20. WatchFlow's Watch Library lets a dealer attach a reference like this to a piece of stock in one click, so the brand, reference and specs are filled in automatically instead of retyped — then that record drives listings, invoices and reports. See how it fits the wider watch inventory management workflow.
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