Feather cuff by Harvey Mace.

I purchased this originally as being vintage but they are still on sale, perhaps this was an original item from way back when.

This piece now comes in 2 styles, with 12k gold and just sterling silver.  This one looks like the 12k option but as it doesn't state this on the bracelet, please assume it isn't.  It might be brass, but I'm not sure. 

6cms across as widest points