This is a near-mint 42mm Zenith Grande Chronomaster Flyback GT Moonphase 03.1240.4001 with the famous El Primero movement. If you know about Zenith watches, then you know about this watch. It comes with all boxes and papers.
I need to send this watch back to the authorized service center for a regular maintenance, since it is about time and it was a regular wearer for me, but if you don’t mind doing it yourself, you can save even more money.
List was over $12 USD, the same watch is being sold at over $7K each, but my price now is $5,100 FIRM and Shipped within USA.