Have you checked out Z Gallerie? I think they usually have those types of tie-backs.
I am not sure if this is the one you're looking but still check it out... http://www.alibaba.com/product-gs/422720169/decorative_tieback_hook_Ball_finial_tiebacks.htmlHello!
I have been looking for something like this but haven't had any luck - any suggestions as far as where to look (stores, brands, etc) would be greatly appreciated!
Thank you!!!!