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The harsh sunlight really shows the defects in the lens up, really should change it soon and get it a service as it's gained about 7 minutes over the last 3 or 4 weeks and this movement is of a chronometer grade so should perform a whole lot better than that.
I would like to know also 😀 Jumbo 36,5 mm. ex crown, cal. 332 from 1950
What is the service record on your watch? May be it might be time for a tune up?