camerawiki:
Simlar 179.5mm and 180.2mm f/4.5 for SK-100
camerawiki:
Luxury Pearl with Leo and Simlar 10.5cm f/4.5 (3)
camerawiki:
Simlar-F 180mm f/1.5
camerawiki:
Tōkyō Kōgaku patent for the Simlar f/1.5 (Jun. 1940)
camerawiki:
Column on the Simlar f/0.7 (Dec. 1951)