There's now a new Group for "Jacobsen Mandolins." David Mold (OldSausage) and I are the only members now, but please sign up if you have an interest...
I recall 1966 or there abouts is when Tut first found the A5 and was showing it around. I saw it back in '66 at the Union Grove Fiddler's Convention...
That's a very nice instrument.... It may not kill banjos, but it sounds plenty loud enough for anything but that and has a magically bright and rich...