Welcome to our Chopard Forum, and thank you for sharing your new Jacky Ickx IV with us.
This piece is well priced for the Mille Miglia price with several cool features - firstly the Flyback function and the 24-hour counter!
You can use this for second-time zone 
Oh and also the screw-down crown and pushers too. You have unlocked the pushers in your pictures.
Can share with us a picture with the 'start-stop' pusher screw-in and leaving the 'Reset' unscrew?
Keen to hear why you ranked your new Jacky Ickx IV top among your collections too.
Thanks again for sharing, and since you love Chronographs, you may wish to check out the L.U.C ChronoOne ( have a steel version too, superb pusher-feel) and Mille Miglia Split-Second. 
Kong