I find handmade lace a small miracle, and find it impossible not to rescue pieces like this when I come across them--what labor and patience went into all of those tiny stitches! Though I have found this sort of lace called Belgian, a little further research has led me to understand the origins of the technique to be, I think, Venetian. The fineness of this example makes me think it has a good bit of age to it, but I am not an expert. 

7" in diameter and in very good condition. It is not mounted; I just used the black board behind it to shoot it.