Thanks peeps!
I'm going to bring it by the shop where I bought my / my wife's SP regs/BCDs and talk to him about it.
The previous owner is one of those super-neat, very organized, everything-in-it's place type of guys, so I feel confident that it's been maintained over the years. He was also a DM in Bonaire for many years back in the 80's, so I look fwd to taking this gear back to BON and using it as intended.
It's funny, though.... I feel, for safety's sake, that I should give my new gear to my son. Weird perception: older gear isn't as reliable. Right? Ironically, I'm old, but more reliable than I was when young.....
More of a sales line than perception. Fact is, that reg with a 109 and 108 as octo is at least as reliable and arguably more so than any new reg you can buy today. The only parts in that reg that get old or worn are the same ones that get replaced during service. The rest are stainless steel or chromed plated brass, not materials that go bad over time as long as they are reasonably taken care of.