I'm a little conflicted on this one. Mines a 70's era I believe. At the very least, it still has the long 18 shot magazine tube and barrel. The problem is, mine isn't the most reliable. I've run it dripping wet, bone dry, and haven't seen much of a difference.
On the other hand, I got it as my first rifle when I was 12, and there's just something about the way it handles and aims that I love. It is still by far the most accurate 22 I own. No kidding, it will still shoot about 1" 20 round groups at 75 yards if I have it on the sandbags. I've looked at the new ones and haven't been impressed.
Also, a thing to remember is that if you want to unload it the "safe" way by dumping the magazine tube and extracting the one in the chamber, that you have to do it twice as there's a round on the lifter when you rack it. Most people don't know that and think that by racking the handle after dumping the magazine tube that they're clear. Always check and re-check, especially with the Model 60.
All that said, I still take it hunting with me all the time and shoot it more than any other rifle (22's included) I own. Just something about the way it handles and shoots. It feels solid too. I just accept that it's never going to run quite right and I've gotten quite good at popping out the jammed shells.
It's still on the never sell list. Hope that helps. Love mine.
Edit: was reading through the other posts and I agree, do NOT use brake cleaner or even the old gun scrubber. I did that and realized I forgot to fully lube all the parts again, there was some rust in there and the buffer was all chewed to hell. Just stick to something mild like CLP or whatever you want, but don't drench it in oil stripping solvents without at least using another aerosol oil.