Yes, You are quite correct. I seem to have quoted the date from another thread in here
https://www.pedalroom.com/bike/71-holds ... onal-29775. I believe this to be the same frame with new owner, he is away currently and will confirm number when he gets back.
Clearly I have been looking at too many frames!
Anyway the conclusion I am coming to is that the road shop pro's follow the ID points on the history site, but the Pista/track frames don't. I'll keep looking but I only have my 69 frame to go on which seems to have the sloping crown seen on earlier (1966) stock track frame and the close semi WO stays with Campag Bolt. (I think the badge rivets can so easily be changed, who knows what happened here)
The factory road pros again follow the usual recognition points, but Sprint/track may well differ. There is a track frame on the history site from 1975 with full wrap over stay, then we see the one above which could actually be from 1978 with the same close WO/campag bolt combination as my 69 shop frame. At around the same time (~197
the road pro picked up the wider spaced semi-WO stays that other model had.
I have to say I have very little to go on, may be the semi WO was offered as a option on track frames? Anyway I am satisfied I have a 69 shop frame with a fork crown that had been in use around that time. Not sure why it seems to have a 'later' seat lug/stay combination, but may be this had been around as an option at that time too.
Any thoughts?