I'm not sure, but could it be a Norton Commando 750?
I had a better view in this picture http://pics.imcdb.org/8212/656121.jpg and I'm pretty sure it's a 1970/71 Norton Commando 750 Roadster
Looks like an early boxer - 1960's R60/ 65? with earles forks and the large capacity racing tank which should help to date it more accurately
Probably the same bike shown here:
if the same it's a R69
could be a 1970 V7 Special http://www.2ri.de/Bikes/Moto-Guzzi/1970/V7-Special
Yes, Moto Guzzi V7 Special as built from 1969 to 1971