Did it not have a s/n plate in the engine bay? No engine stamp? Or were you too late and they closed the bonnet after you took the picture?
Dear bigodino, at first many thanks for the corrections. Yes, I have write the serial number of 275 GTB/4 but i have lost the note (unfortunately) !!! But i hope to have good news on this chat. Many thanks again...and when I meet you in San Sepolcro I can offer a coffee.