Art Nouveau hairbrush, marked sterling but no maker's mark

[1967Pinecone]

Any thoughts on this beautiful brush? It's marked sterling but there are no other marks on it as far as I can tell. Kind of looks like an Unger Bros. pattern to me - a quick internet image search did turn up the same brush with matching mirror purportedly made by Unger, and a matching hat brush on Pinterest also by Unger - but I was unable to find any pics showing marks or any other reference to Unger whatsoever. So maybe these folks were just guessing? Thanks for any help!