Hi Paul,
Welcome to the VMPS Circle.
WOW you have a piece of Audio Americana, VMPS and SoundCraftsman were about as Apple Pie as you could get back then and CLASSICS nowdays.
They DO look in great shape and I'm sure Pop would be happy that you are enjoying them, as he obviously did.
They look well cared for and as all have agreed they are the Super Tower/R (ribbon tweeter) model.
They are good for everything from SuperTramp to Arthur Fieldler and the Boston Pops, and everything in between.
I wouldn't doubt that you also have a Turntable and some choice vinyl to feed them occasionally.

They like a low light room, with a nice soft couch or chair and they will purrrrrr all night long.
Enjoy.