Now yours is the second one I have ever seen and yours is in beautiful condition--Thanks for posting-- This is one of my go-to watches.
Mine was originally owned by a former managing director of Rolex in Canada. It has never been used, being what was called a “live sample”. This fellow was the head of the Canadian branch of Gruen, up until the company was dissolved, and began marketing generic Swiss (non-Gruen) watches. When he left Gruen, he started with Rolex. Rolex and Gruen had a close working relationship over decades. They shared many movements in their various models. Many movements that were produced for them by the Swiss watchmaker, Aegler. I believe Aegler May have been jointly owned by the two companies, jointly.
I worked for a Rolex dealer up until 30 years ago. When the then managing director of Rolex in Canada found out that I was a collector, he gave me two NOS Gruens, including the driver’s watch. I sent him a 26 of Johnnie Walker Black Label, and he was furious with me!
Speedy Tuesday with Omega Barenia leather NATOs in 19mm and 20mm respectively...
LATE ENTRY: DOH! Belay my last...due to a last second wardrobe switcheroo, switching to Omega black coated nylon fabric NATOs in 19mm and 20mm respectively...also, both Speedy Gonzales watches synchronized to the second due to ridiculous OCD tendencies by owner of said Speedy Gonzales watches...
As I had just posted the Rado Diamaster XL picture, an esteemed colleague (Lonestar see above entry ) reminds the forum it was Tuesday. I just saw the reminder, so I corrected my errant way before I head to court. So speedmaster 3575.20 it is...