FrX,
Thank you for the annual sojourn in Citta Eterna.
I like the dial of the Chopard Mille Miglia 2017 race Edition but not the lack of Chopard engine inside like the 2016 edition.
I suspect also the reason may be affordability. Choaprd needs an entry level chronograph for the Mille Miglia range.
Also, as this is the 90th anniversary of the Mille Miglia race, they wanted to "emphasise" the extra special "supercharged" racing engine (L.U.C manual wind chronograph) that they inserted into the Chopard Mille Miglia 90th Anniversary Edition....

Chopard Mille Miglia 90th Anniversary Edition

Chopard Mille Miglia 90th Anniversary Edition
Regards,
MTF