Technical Information needed on vintage INDUSCO DYNA CARBURATOR unit

Does anybody know anything about a INDUSCO DYNA CARBURATOR unit? These are aluminum, hold a 2-bolt carb, the interior of the unit spins and mixes fuel and air and acts a little like a supercharger. These units I have are old, I would expect from the 1950's or 1960's. I have a matched pair and would like to know more information and possibly a value on the pair.

Thanks for looking and trying to help!

 

Snake oil !! Worth next to nothing other than a curiosity. Hang 'em on the wall.

 

I have one nos 3 bolt one, looking for a second.


http://www.jalopyjournal.com/forum/index.php?threads/My '47 3W Dodge build..960954/
My build.

 

Sounds like something I've seen in an early 60's JC Whitney catalog. Yep, snake oil. Put 'em on Ebay call them rare and see how high the bidding goes!
-Dave