Heuer Montreal lost parts

Hi - I'm looking for some help. I bought this beautiful watch for my 40th and it's served me well in the 7 years I've had it. Unfortunately I was at an event on Saturday night and for some reason the glass case must have come out and I lost the outer ring as well! Aside from being extremely hacked off I wondered what parts I actually now need to fix it and where I might find them?

Any help much appreciated.

Ouch, that's annoying- dial looks to be in amazing condition.

You'll need the crystal, a gasket (the rubber that sits between the case and the crystal) and the inner tachy flange. Your watch is Ref 110.503BC

https://www.calibre11.com/heuer-montreal/
Really not sure where to find those parts- might be worth sending to TAG Heuer...will take a while, but worth a shot

Thanks for you help - much appreciated 😀