Most Beautiful Receiver / Integrated - Ever was... ?

HH Scott for tubes! Macintosh for Int.

My vote is for Kyocera.

I bought a Kyocera 661 receiver and 310 CD player in 1987. I didn’t know much about high-end audio at the time, beyond the name McIntosh, which a friend’s father had. I lived near Myer-Emco in DC, so that’s where I went when I wanted to buy a CD player. I had bought Polk speakers there previously.

Eventually I realized—after looking at NAD, Nakamichi, Luxman, and other brands available at that time—that I chose the Kyocera components at least partly because I liked the way they looked.

Pioneer SA-9800

For the poor man, I loved the look of my old Pioneer SX-636.  Thought  it looked nicer than the competing Marantz gear of that era.  Could never warm up to that funky tuning "wheel".

As wolfie said, The Yamaha receivers of early 70's were pure elegance .
As Classy as it gets .