A very nice distinct frame. The fork should have been conventional crown instead of unicrown, IMHO.
It does look a bit small for you, smaller than your first Zurich.
I agree that it looks smaller. The headtube looks smaller. And the seat tube is definitely smaller. But look at that fork. Look how "low" the brake mounting is on that fork. Compare it to the fork on my 55cm Zurich. It looks to me like that fork makes the headtube effectively taller. Or something like that.
I think need to get some wheels on it and see how it sits.