Sad, but true. We may have opened up a confusing can of worms in this thread, but the truth is there are just tons of options available from back in the day - and a lot of those options had their own quirks and idiosyncrasies.

I personally gave up on Regina SL freewheels (after cracking two cogs) as just not strong enough. If you want a reliable alloy freewheel, go with Campy (but be prepared to pay for the privilege). Everest Novas in aluminum are a good choice, too, and bargains can be had.

Better yet, take a weight penalty (let's face it, how many of we geriatrics here can honestly be concerned with the difference a few grams will save us over the course of a ride?) and go with a steel Regina, Sun-Tour or similar freewheel. You can find all sorts of various tooth counts on Ebay.

There are lots of options out there that can keep that vintage bike running well beyond the point where you stop

DD