The Kolster Brandes OB10 "Minuet" is an eye catching miniature a.c mains valve radio (auto-transformer). They were available in red or black coloured cabinets (my example is in red). These radios were made in 1957, and have printed circuit board technology. The OB10 has long and medium waveband reception, and employs the following valves:-
6BE6, 6BJ6, 6AT6, 6AQ5, EZ80.
The small circular dial scale has quite an attractive blue colour, and has a rather small scale lamp to illuminate it (not very brightly).
These radios were made as a "bed side" receiver.
I used to have a black cabinet version of this radio but eventually I made one good receiver from two, as both were in a poor state