The advertisement where I bought it said Clay Ragazzoni. Will have to do a bit of research.
Here is the list of all helmets made I picked from the internets, with a couple of photos:
DRIVERS
J. ICKS - DARK BLUE
N. LAUDA - RED
C. REGAZZONI - WHITE
J. SCHECKTER - WHITE
J. MASS - WHITE
J. LAFITTE - DARK GREEN
J. HUNT - BLACK
C. REUTEMANN - DARK BLUE
J. CECCOTTO - WHITE
M. ANDRETTI - WHITE ( ESSEX )
M. ANDRETTI - SILVER ( JPS )
A. PROST - WHITE/BLUE/RED ( TAG ERA )
PROMOTIONALS:
CHAMPION - WHITE
TEAM MERCURY - BLACK
BELL HELMETS - BLACK
LEYLAND - MEDIUM BLUE
JEB'S HELMETS - WHITE
PLAIN:
CHROME
RED - FORMULA 1 LOGO (TAG ERA)
MEDIUM GREEN - FORMULA 1 LOGO (TAG ERA)
I was interested in one recently too. This one would be the Heuer version, listed as "Heuer Helmet Clock Cavallino Clay Regazzoni"
So glad to see you're still pursuing these timers AR! 馃槑
And very cool with the "high power solar cell" function, and box too. 馃憤
Seeing all these Heuer F1 Helmets motivated me to finally get one! I actually wanted one as a youngster in the 70s, then had the urge again about 12 years ago, but didn't act then either. So it's been about 47 years overdue. 馃槣
My Niki Lauda Helmet Heuer clock joins my Clay Regazzoni Heuer polo shirt. 馃榿
Congratulations Mate. Lovely addition.