Hi Tim

"I can't ID it for you but I can give good pointers of where to stop looking"
1) The b*ll*ck ripper cable guides pretty much disappeared after 1990 and went internal.
2) The lack of brase-on gear bosses puts it more in the 70's early 80's at best.
3)Lug design/quality also puts it in the 70's ( as stated builders pretty much started to opt for less fancier lugs towards the end of 1970's)
4)IF the rear chainstays are a sort of boxed / squared off type (looks that way from 1 of the pics), then I last saw this odd type on an Olagnero frame from 1981, just can't remember the lug type.
TIP: Take a hairdryer to the new paint work, it won't like it and start to peel from the heat. The old paint work being from the 70's is probably stove enamel type / heat treated and will stay put. That banded effect reminds me again of the 70's style.
The forks look like "updates to me" , but I'm no expert , just the rake & design look newer than the older boxier 70's type you'd expect. Once you get down to an area of original paintwork (I'd go for the seattube as most decals lived in this area) most of the clues will reveal themselves, if not a name, then certainly a good idea of original colour scheme.
I always work backwards for ID, "eliminate the impossible, unlikely, get close to likely, then probable. I had murder ID'ing a 753 Geoffrey Butler because the Cinelli aero BB shell & Columbus dropouts just didn't tie in with a Reynolds Tubed G-Butler. I conceded that it was a 753 after ID'ing the colour of the brase (silver), weight, just an odd ball 1 thats all

All in it was a seriously light frame, well built with high end parts, and rode like a dream.
ID the definates & it removes the maybe's

Hope this helps & good luck, yours Laz.