The very large moments of inertia obliterate vibration. In spite of the uncoated optics, the result is a very very high image quality in a surprisingly lightweight binocular.
8x60 is a long forgotten formula for maximal image quality and brightness. It was the priviledge of captains in the German Kriegsmarine to carry a pair of Zeiss or Leitz 8x60 binoculars instead of the standard issue 7x50 U-boat models.
Think of it as a specification without compromise where nothing but the very finest result is taken under consideration. These binoculars aren't more than a decade and a half newer than their heavier WW2 military counterparts.
They're pretty sure to please the collector and user alike. Sharp, clear, collimated with a great restored original hard leather case.