It is a real Holdsworth Professional from the early to mid 1970s alright.
Cleaned up with the "junk" removed and a Campy NR rear derailleur it could bring $700-$800.
Get rid of the cheap Lyotard pedals too.
I have a 1973 Holdsworth Professional frame that has been sitting waiting to be put together since 2008. I gave a pretty penny for it. They were rare birds and still bring big bucks for those who know.
Replacement white Holdsworth decals are available.
verktyg
For those who follow my ramblings, see, I have more than just French bikes.