Ace - kids, old.
Canuck - kids, old, careful not a .25
M35 - pump repeater, forend tends to crack
M39 - smaller single shot bolt
M60 - tube fed bolt repeater - became 600 and lost some details when Winchester took over. See the weekly "how do I remove the bolt post?" - remove from stock, back off action screw a few turns to allow mag to disengage bolt.
M64 - mag fed semi auto - early ones have plastic mags. Steel mags still available. Still manufactured by Savage (some changes). Need to be kept clean - easy to strip.
M75 - bigger single shot bolt - became 750 and was slimmed down when Winchester took over
M82 - military trainer - some have full stock and/or peep sights
M71 - centerfire (lower cost Winchester M70)
M84 - shotgun (840 when Winchester)
The 39, 60, 64, 75, 82, 750, 71 I have shoot very well. The single shot all have the separate cocking bolt and half #### safety - dont take bolt apart. The bolt repeater has a safety where rotate bolt into a slot when cocked - dont feed single shot.
Manufacturing started in 1919 in TO, in 1929 moved to Cobourg. In 1961 bought by Olin/Winchester (Winchester Western Canada), ~1977 Winchester Cooey, and in 1979 the fat lady sang. The place of manufacture can give you a hint to age.
Made under a variety of names, Sureshot, Sears, Eatonia, Hiawatha, Ranger...