There is a bed from Z Gallerie called the Victoria Sleigh Bed. It looks exactly like this bed. It's not just a headboard, it's an entire bed.

this can be purchased from restoration hardware as well. it is called the chesterfield. as the chesterfield is also a style of chair and couch. good luck with your find! this is gorgeous. i have one on order. it will be 7 mos. waiting by the time i get it...but worth the wait. fabric i chose is backordered. the rest are in stock and ready to ship.

It can also be purchased from value city furniture.