No animals were harmed in the making of these sconces. They're "Technoplastyka" which was common of many display dishes at the time. It was also used for art as we see here. Molded, then hand-carved and hand-painted, just by seeing the differences in these two it's clear each is it's own and not mass-produced.
I find myself digging through many barns and basements and have seen more than a few actual horn sconces, but when I found these it was something entirely new. Aside from minimal storage soiling that will clean off, these are in brand new, unused condition. The item "Antique Hand Made Synthetic Technoplastyka Horn Sconces Vintage Poland" is in sale since Wednesday, February 10, 2021. This item is in the category "Sporting Goods\Hunting\Taxidermy\Other Taxidermy".
The seller is "selma_junkoff" and is located in Huntington, Massachusetts. This item can be shipped worldwide.