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Good Morning Jimbo and Syrte and others.
What a nice introduction to the day, an "UncleWatch" thread with a nice watch for a change.
As noted, the watch is a very nice 6309-7049 made for the North American market in June 1978. Japan and ROW market watches were identical but marked 6309-7040.
It all looks to be completely original (bracelet excluded) and has a very clean "Suwa" dial (the Suwa mark just below the 150m). These were used up until about 1980, then the Suwa mark wasn't used on the dial.
The condition is excellent and would take very little to bring it up to "NOS" 😁.
Calling @omegaswisst, I'm sure you like to see this one mate 😉.
Edit: No need for your Uncle to open it, here's one I prepared earlier.
https://omegaforums.net/threads/on-my-bench-a-turtle.102070/
...........What does this “suwa” stand for?
It is an interesting symbol.....................
Good Morning Jimbo and Syrte and others.
What a nice introduction to the day, an "UncleWatch" thread with a nice watch for a change.
As noted, the watch is a very nice 6309-7049 made for the North American market in June 1978. Japan and ROW market watches were identical but marked 6309-7040.
It all looks to be completely original (bracelet excluded) and has a very clean "Suwa" dial (the Suwa mark just below the 150m). These were used up until about 1980, then the Suwa mark wasn't used on the dial.
The condition is excellent and would take very little to bring it up to "NOS" 😁.
Calling @omegaswisst, I'm sure you like to see this one mate 😉.
Edit: No need for your Uncle to open it, here's one I prepared earlier.
https://omegaforums.net/threads/on-my-bench-a-turtle.102070/
The dial is correct and the dial text "water" and "resist" start off as dark red then fade to green then silver/white with UV exposure (sorry I can't tell if yours is red or green - blame my red/green colour blindness).

Why I never knew I had two Speedmasters since I have one of these too!
I just want to be in Syrte's thread. Mine's an ol' 1983 6309 7040. No Suwa dial, faded out markings and ugly numeral plots, probably not the original bezel, perhaps not the original hands either. Still has its original GL 831 strap though.
My NOS one still retains the red print. Sort of hard to capture with a pic but to the naked eye it's red