I have one very like that from the 70s, and one from before they used date stamps (50s? early 60s?) with better build quality.

I like 35s. As alluded to above, they have nice triggers. They handle well (not too heavy, not too light, not too long, not too short, just right). They are well made even in the cheaper post-1966ish versions. They are mostly a little better than contemporary BSA and Webley models (setting aside Webley blueing) and BSFs (setting aside how punchy the BSFs were).

If you can live with 9-10 ft-lbs typical muzzle energy, rather than the 1970s/80s demand for “full legal hunting power”, they are very nice to own and use.