IWC Portuguese Perpetual Calendar Tourbillon Armor Gold / Bucherer IW504-507
The IWC Portugieser Perpetual Calendar Tourbillon reference IW504-507 was introduced in 2026 as a limited edition of 18 pieces for Bucherer. Building on the template provided by the Portugieser Perpetual Calendar Tourbillon of the 150th anniversary collection, it features an 'Armor' Red Gold case of 45mm, which…
| Reference | IW504-507 |
|---|---|
| Collection | Portugieser |
| Case diameter | 45 mm |
| Case material | Red Gold |
| Case shape | Round |
| Case back | Open |
| Lug width | 22.00 mm mm |
| Movement | IWC caliber 51950Hours |
| Water resistance | 30 m |
| Dial colour | Silver |
| Dial finish | Matte |
| Indexes | Arabic Numerals |
| Hands | Feuille |
| Crystal | Sapphire |
| Year introduced | 2026 |
| Limited edition | Yes |
This is a reference-catalog entry for the IWC Portuguese Perpetual Calendar Tourbillon Armor Gold / Bucherer IW504-507. 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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