Some lovely Falcons on this post, here is my 1980 Falcon Professional. Originally purchased from a shop in Lancashire in 81'. I am told It was a show bike for the then new Shimano Aerodynamics Ax series which didn't really gain too much popularity. Some components are now 600.
Typically Falcon, very little is known about the bike, it's frame number is 00002, people have speculated it was a special build, but we will never really know.
It was donated to me by a lovely old semi pro racer in 2009, I don't use it often but it rides beautifully.