eBay
I recently bought some wonderful lace from a Paris auction house, all from the collection of one un-named lady (Madame X in the catalogue!).   I will be listing some pieces in the next few weeks.

These are 2 lengths of delicate Brussels applique lace. A little age darkened with the occasional tiny hole but apart from this excellent and clean condition.  They measure 77 ins by 3.75ins. in 2 pieces.