It is a later sub (late 60s).
It does not look polished (edges are sharp). From what I can see, dial and bezel are a little weathered and there are many dings and crystal is not original and is damaged at 4,5 and 6. Case back has undergone the kojack process (turned). However, that configuration is not common so in my eyes, it is a worthy and quite rare example if correctly priced. The bonus is the GF band which itself is worth a small fortune.
I presume it is this one on chrono24 ...
View attachment 773376
I dont see a reference and serial number and at UKP 5.400, it is on the upper range of what I would be expecting to pay.
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