This Minute Man 6T-170 can also be found branded as Fuji and as Constant, both with the model number 6T-170. I have also seen a cream colored version branded as ‘Hi-Fi. It was distributed in the USA by Intercontinental Industries Inc of Chicago.
This 6T-170 uses the same cabinet as the 6T-270. Both are made by Constant with the 6T-270 branded as a Crestline.
Both measure just 3.8” x 2.2” (98mm H x 58mm W)