Arrow was a brand under which a number of simple cameras were sold in Brazil in the 1950s and '60s.
The Arrow 50 is a box camera, probably for 2¼x3¼-inch exposures on 120 film It has brilliant finders for horizontal and vertical use, with covers, and is clearly a copy of the Coronet Captain (or the very similar Consul, Conway, etc.) The only picture of the camera seen appears to show exposure controls also resembling those on the Coronet cameras (perhaps 'I' and 'B' shutter, and perhaps either an aperture slider or a yellow filter).
The Arrow Jr is also a 6x9 cm box camera for 120 film. It has no exposure controls. It is styled after the Kodak Brownie box cameras. It is attributed by the Brazilian collector's site Cameras Antigas to Fotobras SA of Curitiba; it is very similar to Fotobras' Unicamatic.
The Arrow-flex Modelo 1 is a pseudo-TLR camera, apparently for 6x9 cm exposures. It is similar in style to the Arrow Jr, and Cameras Antigas attributes it to Fotobras. It has no exposure controls; simply a shutter release lever.
- Cameras Antigas; text in Portuguese; one very long page.