You have an amazing wealth of information about the history of this field.
This was found in an unattractive homemade ported cabinet in a basement. There was a 10" in a similar cabinet with a similar cone also marked "Made in USA" but no other markings at all.
It is not as nice as the 15, but it likely is from these guys as well.
Bozak was located in Norwalk which is right nearby so there may well be a connection there.
After a bit of research I found out that Cinaudagraph was located in Stamford where I found this speaker.
Thanks
Harry
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