Hello, i have also seen Heuers with the large lugs. If fact there is one on e-bay now!
http://cgi.ebay.co.uk/Chrono-Heuer-triple-dates-valjoux-72c_W0QQitemZ260326308219QQcmdZViewItemQQptZFR_YO_BijouxMontres_Montres?hash=item260326308219&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A10%7C39%3A1%7C240%3A1318
These have correct signed movements, casebacks and crowns. This would sugest they are real.
I originally thought they were redials but are the clebars heuer signed?
i have seen around 5 of these which also points towards "real"
what do others think?
nic