3 Eugene Featherweight Curler clamps--aluminum and rubber VINTAGE 1920

Description

I recently bought a bunch of things from a beauty shop that had been closed for 50years and finally the family had an auction--so if you look at my ebay store you will find others things like this during the week as I list them.
These are some kind of clamps put out and patented b Eugene( featherweights-2) believe some sort of rubber band was used to keep the curler tight once it was rolled....honest I am out of my area of knowledge with these items but if someone who had an upscale salon did a little museum in a case next to their product lines--it would be very interesting and maybe even profitable...??????
These items are 3 1/2 inches long--appear new and this auction is for only three(3) of them--
-though I  do have more ifyou have the need of them etc.
Thanks for looking and if you have any questions--give a holler--though quite honestly I don't know much more than I have said...LOL
Thanks and hopefully they are something that you have been lookingfor for a long time...long time...long , long, long time...
Thanks once again...