This lovely French fan, in paper and very fragile, dates from the early 1900s. At the lower right is “Eventails Duvelleroy” (“eventails” is “fan” and “Duvelleroy” was the company that made the fan. Over on the left side, there’s a sketch of two men, one on either side of what appears too be a crest. Each man is wearing a sash and they both have walking sticks. Then “Hotel Knickerbocker Restaurant”. The Knickerbocker Hotel was only in operation from 1906 to 1920.
Duvelleroy returned women’s fans to society in Paris, after they’d been out of fashion since the late 1800s. They’re still in business producing remarkable fans.
Every time I open this 14″ fan, something falls off. It’s the paper backing, not the mount, that’s coming apart. The gold pressed details on the guards is still visible. All in all, pretty good for a centenarian.
Uncle Bob's Pix 
Very lovely indeed. 🙂