Interesting cal 565 Seamaster?

I've only recently become interested in watches/movements and I really like early Seamasters and other similar looking 1960s watches. This watch has been in my family for around 15 years or so now, it was purchased second hand in Vietnam in the 1990s I believe.

I've never seen a Seamaster with a dial that looks anything like this, and haven't been able to find anything close to similar online. It appears to be cal 565, the serial begins with #302 (which from what i can tell means…

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