The Beautyflex 2.8 was the only TLR (twin Lens Reflex) camera ever to compete with the high-end Rolleiflex models of the 1950s and 1960s, the only non-Rolleiflex ever built that had a 2.8 lens. The Cantor lens on the Beautyflex 2.8 resembles the image quality of the Xenotar lenses on the Rolleiflex 2.8C.
This is a rarely seen camera. I was lucky to purchase it online a while ago and was totally amazed when I finally found one in good working condition after looking for it for over a year.