This thread is interesting indeed! Here's a couple of beat up pick ups of mine from the late twenties. Both are meant to allow you to use your old machine to play records through your radio. The
EFA " Electro Reproducer" has a fitting which is made to fit exactly on a Victor goose neck acoustic tone arm. The leads come out a hole in the side of the housing. I've never heard of the company. Any ideas??The
Stromberg Carlson pickup and arm comes with built in volume control. It has a rubber base and I think it was meant to sit in the cabinet of your acoustic machine. The tone arm is so short that it's tracking error must be horrible. And it's heavy, even if it is counterbalanced by an internal spring. ( They're both heavy, let it be said.)
I've replaced the rubber in these two and the Electro doesn't sound half bad.I was not the one who lost the screws and scratched " L" on the cover, by the way.

The Stromberg is less wonderful, but I think the magnet is seriously in need of a boost.
I've never seen an ad for these two, but I will muck through my stuff to see if I can find some HMV ads for their pickups and radiograms. When you hear a good HMV radiogram from the late 30's it shows that those gushing reviews in
The Gramophone weren't all puff pieces!
Jim