My understanding of the difference is that the round emblem appeared when
Rockwell acquired Collins Radio. Therefore, the winged emblem was used when
it was Art Collins &Co. and the round one was used for the later products
produced as a part of Rockwell.
If someone has a different understanding, I would be eager to learn about
it.
Joe
W5WBR
"Rick" wrote in message
news

What is the difference between the "winged emblem" Collins radios and the
other kind ("round" emblem?)?