Kanto Amiflex II
Another rather mysterious manufacturer, although a website I found lists Kanto Optical Industrial Co. in Tokyo as a binocular maker in 1959, which is probably around 5-6 years after the Amiflexes were made. I think this is a Model II variant, although it differs from the specs for the model in Sugiyama and McKeown, with a faster shutter and slightly different lens name. It's a geared-lens, fairly simple beast, but works quite well. There's some commentary on
Robert Monaghan's Medium-Format site, which is quite complimentary about the lens quality.
Taking lens is AMITAR 80mm f3.5
Shutter labelled "AMI" 1 to 1/300