The History of the Rolex GMT-Master - Edinburgh Watch Company
A Complete Guide to the Rolex GMT-Master | Mark Littler Ltd
Rolex - The Hong Kong Watch Auction: SIX Lot 952 May 2018 | Phillips
Rolex GMT-Master Ref. 6542 – Watchworks
Rolex GMT-Master History
Rolex GMT-Master History
GMT-Master 'Captain Warren', Reference 6542 | An advert worn stainless steel dual time zone wristwatch with date and bakelite bezel | Circa 1958 | 勞力士 | GMT-Master 'Captain Warren' 型號6542 | 精鋼兩地時間腕錶備日期顯示及人造樹膠錶圈,製作年份約1958
A Brief History of the Rolex GMT-Master | The Rake
Rolex GMT Master ref. 6542 Gilt Dial circa 1957 Korean War Pilot