Wondering if anybody has that camera and could check the lens configuration of its 48mm f2.8 lens.
I recently got an Olympus 35-S with a 48mm f2.8 lens which is a 5 elements in 4 groups type. It came out the same year as the Kowa (1955), shares the same shutter, and both the Olympus and Kowa also had a sister model with a 45mm f3.5 lens (Tessar for Olympus). So maybe they used the same lenses?
I recently got an Olympus 35-S with a 48mm f2.8 lens which is a 5 elements in 4 groups type. It came out the same year as the Kowa (1955), shares the same shutter, and both the Olympus and Kowa also had a sister model with a 45mm f3.5 lens (Tessar for Olympus). So maybe they used the same lenses?