Hello everybody, next to my obsession with the Heuer 1000 (1st gen thick case 38mm) I am enjoying those Heuer 2000 chronos lately. I bought 2 pieces. The 273.006 quartz and the automatic 173.206 and a rare tachy bezel that I will install on one of those someday. Does anybody know, which crowns they take? The 273.006 came with a Tag crown that I would love to replace with the Heuer signed variant. Images: https://www.instagram.com/say_doy_ver/ 2nd question: Who is good in servicing Heuers in Germany? Any recommendations? Thank you and all the best.