Folding 120 film 6x9cm rollfilm camera with coupled range finder made by Welta Kamera-Werke(Waurich & Weber, Freital,Germany).
Welta made s many cameras as did the Balda Company. They are famous making the SuperFecta and Parfecta unique folding TLR. The Solida was introduced in 1933 as the first coupled range finder camera among their products. The later version of Weltur is a successor model of the Solida.
The most high grade lens in these period, the Tessar 105mm F4.5 was attached to this model.
The camera design looks like trial product though. It is able to get fine sharp images even today when we take pictures with it.