I am new to this forum, also to vintage bikes. I just obtained a Carnielli Bottacchia bicycle, and am trying to find out a few things about it. First I would like to know what vintage it is, secondly an approximate value. The number stamped on the bottom bracket is M4 3749 59. It has campo GS cranks, a campo front derailer, a shimano 105 rear derailer, and modolo speedy brakes.
Any information would be greatly appreciated.