Hello,
I finaly found this pair of rear brake calipers.
Thanks to PMB Performance because their white paper about the 356c brake calipers helped me identify the right model:
>>>
... some of the first 901 (911) cars came equipped with 356 calipers.
356 calipers will have a Dunlop license marking by the fluid inlet.
...
They will have a 3501 marking cast into one ½ and a 3502 marking cast into the other.

<<<
Read more: https://www.pmbperformance.com/artic...173/189326.htm

The 3501 and 3502 markings are present:

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Still looking for a pair of front brake calipers:
PMB Performance white paper:
>>>
They will have a 4801 marking cast into one ½ and a 4802 marking cast into the other.
Read more: https://www.pmbperformance.com/artic...173/189325.htm
<<<

Question: Any idea of the exact model / date of this 356c front calipers?
There are no markings 4801 nor 4802.
Those calipers have a 4810 marking only on one side. No marking on the other side.

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Thanks,
Philippe