Your first watch is great.
A first watch in a collection.
When someone have a first watch, there is no collection.
When a second watch is there, then we speak about a collection.
Decades ago you’ve got your Zenith.
So you have wore one watch the most of the time, without wear a second watch.
Read correctly, you have a watch collection.
The first one was a Zenith El Primero chronograph.
The others are also from Zenith, or do you own for example a Heuer Autiva?
Have a great evening, thanks for sharing your Zenith El Primero.