Balda Rigona 35 mm Collapsible Bellows camera with a 50mm f3.5 Lens TESTED 362 | eBay
A Tray of Balda Folding Cameras, a Balda Rigona, with fixed finder, shutter working, body G, with 50mm f/3.8 Rigonar lens, elements G, a Baldi 29, shutter erratic, body G, a Baldix,
Balda: Rigona Price Guide: estimate a camera value
Camera, Balda Rigona; Balda-Werk Bünde; 1948-1955; RI.W2017.3617.4 on NZ Museums
B&W Photography - Balda Rigona folding 35mm camera from 1950th - YouTube