Over the years there have been some "short runs" of products that most people are not aware of.
A couple I remember are the Crown MT1000. NOT the 1200. It was the first one out-but not for long.
There was also a Crown MT1200 that was a cross between the MA and MT1200. I guess it was during the transition to the MA series.
I bought some of the first Crown Microtech amps when they were introduced in the mid 80s. As a big Crown fan at the time, and user of multiple black-face DC300A-II models (the upside-down ones) I jumped at a chance to get improved power, efficiency, and packing density (The fans are inside? I'll take that!). Eventually had three 1000 amps, only blew up one (on monitors at a Lonnie Mack club-gig). They were crude amps by today's standards but I suppose they competed fairly well with their contemporaries. It would be decades before I bought another Crown product! Of course, the Macrotech Series was an improvement over the Microtech in just about every way imaginable, but I'd already moved in a different direction.
...and to sort of get back on topic, I do remember those funky gray little Shures, and Stop Making Sense is my favorite live concert film ever. David Byrne had moments of genius during his career.