What about the yellow triangle above the cab, was that obligatory in Italy at the
time and does it signify a trailer?
Yes, it was obligatory and means trailer (like spanish truck)
Also was I right about the registration -
Bergamo?
Yes the reg is bergamo, the truck was owned from CentroTIR (not exist yet)
and went in IRAK, wonderful saw it near some ASTRAN Leyland Marathon or Scania 110 !!!
Some info, from left to right: Lancia Esatau (now well know to everybody ), Lancia 6RO (the same Esatau engine but with 5 cyl), Esagamma 519-520 (the last model built before Iveco globalization), Alfa Romeo 1000 (called “tenerone” means not a strong truck).
I have a little collection of old fiat and Lancia in good digital format, if someone is interested in write an e-mail