: I've seen wear on subdials that looks the same way as these ones -
: they definitely weren't re-finished in white to alter value.

: Similarly, if you're saying that they were previously black, this
: would be a totally unique dial combo. The NT dial does exist,
: but the tachy track is different than this dial (see below).
: This example is fine, it's just a little tired.
:
:
I agree with you, the watch in the OP is probably just a bit dirty and worn.

That NT is the earlier version of the Tachy scale though, rather than the one that appeared on either of the pandas.