Wah... I am no pro. I am just a fan of their watches only.
Anyway, the piece that you linked.
It's the Captain collection.
Movement wise they are as robust as they come.
Launched in the year 1969, all the teething problems would've been ironed out and if the movement survived till this day, it says alot.
As for the resale value, Zenith watches do not fare so well.
Retail price for that piece is in the 57k-61k region iirc... I am not a fan of precious metal cases so I did not memorize their RRP.
But even at that price, you're looking at a very nice watch from a historically rich brand and a manufactured in-house movement.
It is my opinion that they still offer the best value there is...