I offer this very rare camera clearly inspired by the Leica 35mm, with simple features but solid metal construction. Weighs 575gr. Apart from the name Mikra, you have no other inscription or mark or diaphragms in the target is built. I reckon is 1950s ... I can not find information of any kind, yes, the one 03.01.2019 sold for € 184 at auction in HOME. In the last picture I show you a page. of Gerardo acereda book" 1890-1990" ONE HUNDRED YEARS OF SPANISH CAMERAS, where there is a larger format Cabel with similarity to the Mikra.