I always think "Why on earth do people say 'he'?" before I remember that it's not obvious to non-German speakers :) The -in ending on nouns denotes the feminine.

I actually have a mint, never mounted blue CdG dial I could use in this but I'm not sure I could be bothered sourcing the hands etc. I'd rather use it to replace a like for like dial in an unmolested 110.573 B really.

She obviously has access to lots of nice parts though, and some of the watches are straight. And I'm still not convinced that that Heuer Indy she once had:

isn't a long-lost genuine Heuer along the lines of Jeff's Heuer Memphis, although at least that latter had the benefit of being seen in a price list before the (slightly odd-looking!) original turned up.