Welcome, but something doesnt add up here
With a date, it should be cal 561 - is 560 actually stamped on the movement?
From the photo, it seems to me to read 18 million, so thats 1962, which ties in nicely with the 62 stamped inside the case back
The case itself reminds me of a constellation case, but could have been used for seamasters as well
The photo of the movement is poor, do you have more?, and specifically a photo of the stamped writing obscured by the rotor - it looks to me that that is a Chronometer part, and should not be on this watch, but i could be wrong here
Cheers, paul
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