![Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE](https://images.squarespace-cdn.com/content/v1/512f9596e4b0ed945e3306aa/1391611403979-LJYFDC6G3LO6NIRX6QBJ/L1220459.jpg)
Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE
![Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee](https://hodinkee.imgix.net/uploads/article/hero_image/1160/_img.jpg?ixlib=rails-1.1.0&fm=jpg&q=55&auto=format&usm=12&w=1200&h=630&fit=crop)
Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee
![Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee](https://cdn.hodinkee.com/uploads/block/inline_image/content_image/5294/_img.jpg)
Pre-SIHH: Introducing The Audemars Piguet Openworked Extra-Thin Royal Oak Limited Edition 40th Anniversary - Hodinkee
![SPOTTED: Prototype AP Royal Oak 40th Anniversary Skeleton Tourbillon in STAINLESS STEEL - Monochrome Watches SPOTTED: Prototype AP Royal Oak 40th Anniversary Skeleton Tourbillon in STAINLESS STEEL - Monochrome Watches](http://monochrome-watches.com/wp-content/uploads/2014/02/Audemars-Piguet-Royal-Oak-Skeleton-Tourbillon-steel-proto11.jpg)
SPOTTED: Prototype AP Royal Oak 40th Anniversary Skeleton Tourbillon in STAINLESS STEEL - Monochrome Watches
![Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE](https://images.squarespace-cdn.com/content/v1/512f9596e4b0ed945e3306aa/1391611730821-995T7UE364LUYI2E9UHO/L1220467.jpg?format=500w)
Insider: Audemars Piguet Royal Oak Openworked Extra-Thin Tourbillon. The Prototype in Stainless Steel. — WATCH COLLECTING LIFESTYLE
![Hands-On: With The Audemars Piguet Openworked Extra-Thin Royal Oak Tourbillon (Pics + Pricing) - Hodinkee Hands-On: With The Audemars Piguet Openworked Extra-Thin Royal Oak Tourbillon (Pics + Pricing) - Hodinkee](https://cdn.hodinkee.com/uploads/block/inline_image/content_image/4323/_img.jpg)