That's right my friend. We are going with searching flaws to far in the subject, that we only imagine themselves!
As this time the perfection was not like today, every dial or datewheel etc. was handmade and thats because this pieces get expensive:
Cause they are unique...
And the winner is...
...i dissolve it:
It's a genuine 1680 with all original parts from 1973!
Serial is 38xxxxxx.
1570 non quick set movement.
Silver flat top date wheel (only 26 is closed).
The date magnification is to small, because the crystal has been polished a few times...
Thats all to say about this beauty.