Listed in Vintage Radio as being made in 1925. It will be battery operated and probably uses 201A tubes.
Norm
:I have a David Grimes inc. Baby Grand Duplex radio given to me by my father. dont anything about this radio, want to get it in working order can any one help me. I live in wisconsin Beloit 608-368-1552 Thank you Edward V. Hogue ps it is type BG serial 1173 if that means anything.