Riken Ricohflex IIIB

The Silverflex is a rare copy of the Ricoflex III/IV. It was made in JAPAN about 1953 by NIHON KOKI CO.and is quite a rare camera. It has shutter speeds B and 1/10 to 1/100. Lens is a SILVER ANASTIGMAT F3.5 80MM. I don't have a Silverflex in my collection - this is from an eBay auction.