I'm going to suggest either Gevelot or perhaps a KRICO M260.
Gevelot did a lot of 'rebranding', and maybe one just missed to rollmark machine. (I think they even built some for CIL in the '50s and '60s). Their quality was usually favoring economy rather than precision.
KRICO was always kind of 'high end', and I doubt they did any rebranding. Their quality was usually impeccable - not glitzy, but as straight and true as a German engineer could make it.
What is your overall impression of materials and workmanship?
Great job on that stock, the original red stain looked absolutely disgusting.
The Reciever, bolt, and the big threaded knob at the back with the recoil spring all look like Squires-Bingham/Armscor design.
I would like to see the magazine.
Take a look at http://www.gun-parts.com/sako/Sq.jpg
Tell me if you don't see more than a family resemblance in the layout of the trigger and sear, as well as the bolt and firing pin springs setup.
The trigger housing looks way better built on this one here, though.
Dunno if the stock is factory or modified, it has a real late '70's look to it, but you never can tell for sure without a color catalog in hand.
Cheers
Trev