: Thanks for the congratulations! With so few 7228s around you now
: have competition for the coveted 'feature model photo' for the
: 7228 on heuercamaro.com! ;-) (Looking forward to the serial
: number for that fabled one too.)

: I have not yet got around to buying calipers so my precise
: dimension calculations can be crude. That said, for a 72 crown I
: believe it should be 6.7mm x approx. 2.7mm.

: Hope that helps.
: Best, Steve

Certainly the equivalent Carrera has a 6.7mm crown so that looks right Steve.