[Milsurplus] Aircraft Radio Corporation T-15, -16, -17

[Hubert Miller]

You didn't find pics of Collins pre-WW2 aircraft radios sold in South America.
-Hue

"It seems there's no documentation surviving on these radios and no one alive has ever seen even an image."

Image of the radios, the documents, or their use in other countries?

I did a quick google search for ARC T-5, 16, 17, and found pics.

Kurt