The (pre war... WWII not the Boer Agfa Billy Record (I or II) is a 6x9 which works well (mine do anyway). The 1950's Zeiss Ikontas are 6x6 but run surprisingly well. Optically neither of them are bad! It is the handling of them that leaves something to be desired (by todays standards). If you want some pure 6x9 fun then the Fuji rangefinders (GW690 etc) are fun but way off your price tag. You get what you pay for, and photo quality wise an old 1930's Agfa Record can still do stunning pictures. Flickr or have examples.