Got this nice 2 Reg Chrono recently...I think it's a Zodiac 36?

My question is, what marque is the mvmt? I think that's a 7733 there? Valjoux? Any help appreciated...

It is a Valjoux 7733.
It is an Eta stamp, Valjoux is owned by eta.
Eta stamps their movements instead of the VAL or R for Valjoux that you would find on older Valjouxes.

Best Regards,
Francesco.

Thanks, Francesco! This one from the 1970s?

It looks like the mark is an R 7733 under the balance wheel for Valjoux

1969 - 1971 the first variant of Valjoux 7733; this one with the 30 min counter.

Regards
Gerald