Ran across these three way speakers today---never heard of them before. Anyone out there know anything about them? They remind me of a 604 based system in a Valencia style cab--might be a unique addition to someone's "arsenal" (there's a phone number in the ad).... No affiliation with seller yada yada......

ALTEC University Mustang M15-T 15" Drivers Like Altec 604 - Canuck Audio Mart