Reference Points: Understanding The Rolex GMT-Master - Hodinkee
1958 Rolex GMT-Master Bakelite ref. 6542 Retailed by Serpico Y Laino - Lunar Oyster - Buying and Selling
1958 MINT Rolex GMT Master Ref. 6542 Watch For Sale - Mens Collectible GMT
The steel Bakelite GMT ref. 6542 – Corrado Mattarelli
Rolex. A very rare and highly attractive stainless steel dual time automatic wristwatch with sweep centre seconds, date, black gloss dial, bakelite bezel and bracelet