Agreed, the Neck plate doesn't look right!
And I think technically speaking, the case should be white if its an original '63 case
Doesn't look like an era accurate refinish, but still, if it was all original 4k would be good money for this (half off for a refin).
In fact, sure the neck plate is fake:
80,000s to 90,000s 1963
90,000s up to L10,000s 1963
L10,000s up to L20,000s 1963
There is that dash on the left of the number, but if that was part of an L, it would be too high!
Si