Nice looking C8A you have there, Benoit!
More info on C8A's, in Italian (but copied from Wheels & Tracks magazine), can be found here:
http://www.amv-lilliput.org/modelli/...8A_1/c8a_1.htm
http://www.amv-lilliput.org/modelli/...8A_2/c8a_2.htm
HTH,
Hanno