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The Mastra V35 35mm viewfinder camera was made in Germany by King, c.1958 as a simpler version of the Regula IIIa. It was marketed by UK distributors Photopia. It was also badged as the USC 35 IIa and sold in the US by the United States Camera Corporation[1].

The Mastra V35 was fitted with a Steinheil Cassar 45mm/2.8 lens in a Vero shutter.

  1. McKeown 12th ed. p.809