Jim, employing his customary sardonic sense of humor, says that he brings this to my attention to show that there can be a Porsche even uglier than a 944. Ooooooooooh, nasty.
More rare and strange German automotiva can be found on other pages at that Facebook site.
And here is something else that seems to be associated with Beutler.
More intelligence! The Beutler Brothers were coachbuilders in the 356 era.
And here, with the good graces of Google Books, apparently quoting from the Porsche Legends book by Randy Leffingwell, is a chapter on the 1959 356A Cabriolet by Buelter.
Okay, I’m slowly going to back away from the keyboard now, having satiated my interwebs thirst, at least for now.