Meh.
You know where to get the facts, Don, the green place, or ask Bill when you talk to him.
The SH I woofer is a modified 414, it's not a "427" that's incorrect. The tweeter is an Altec 427-8A and as much as the aluminum dome made them look "racy" they don't perform any better than the paper cone tweeters Altec used made by both CTS and Becker.
The Segovia is a better sounding speaker top to bottom, if you want to try a 3-way, non-horn Altec that's the one to get.