Hi Erich,
I once collected about a dozen 1960s-1970s SS snares, but only have two at this time. One is a pre-serial number - 1961, I think it is - one of the earliest produced, from the collection of BEC. I also played a 6 1/2" 1976 SS for decades....I studied the various production changes made over the years, but - unfortunately - I'm out of town right now and cannot access those two drums nor the notes I've made...I'll be home on Monday and will be happy to tell you then what details I've accumulated, and I can photograph my early SS....My memory can no longer be trusted, but what I do know, is that the earliest SS snares have a throw-off unlike the common SS's. It pivots in the opposite direction as most Ludwig SS's....The earliest snare wires - thru about the early-to-mid 1960s, had individually-adjustable wires! Yeah, hard to believe. I have no experience with these, as I always used the later SS snares, which are the same as common snare wires, except for the metal ends that engage the throw-off mechanism(s). These are available via Ludwig or Puresound, or on ebay. There are two types - early and late.
I think the steel link (slide deal) part was changed to plastic in the mid-1960s (after serial numbers started).
I never had any problems with my 1976 snare - I thought it had great sound, but most guys don't like the SS because they say it is finicky to get it sounding good. If you are happy with your's now, I'd be inclined to leave it be. But to each his own.
Like any other snare, it takes patience and care to tune it well, with the snare wires "centered" along the bottom head - and with the clever SS mechanism(s), you can ensure that your snare wires are touching the head evenly all along the width of the head.
We can probably all agree that the SS is over-engineered, but with time and attention, it can be a great sounding snare. The primary reason I switched to Jazzfests and Supraphonics a few years ago, is because the late-style SS snare guards (the large tubular ones) were either bumping against my mounted tom, or against my stool...or pressing against my bass drum leg. I could never get it out of my way, consistently.
But whatever floats your boat! Regards, MB