This chunky little Crestline 6T-270 was manufactured in Japan by Constant circa 1959. Constant was a brand name used by Fuji High Frequency Radio Lab, Co, Ltd. This company may have been a subsidiary of Fuji Electric Industry Co, Ltd founded in 1923.
Constant designed and manufactured some highly collectible and unusual transistor radios. Constant also made radios under the brand names Vulcan, Windsor, Barlow, Minute Man, Supre-Macy, Personna, Morse, Crestline, AFCO, Fuji, Sabre, Hi-Fi and probably others. Other than that I know very little about Constant.
