Wow! What a beauty! I've searched Barbara Brackman's Encyclopedia of Pieced Quilt Patterns, but did not find this one. There are similar blocks based on an Octagon, from KC Star, which published patterns in newspapers. One thing that makes this very interesting is the large Center, which looks to be one third the size of the block (horizontal or vertical measure. Most Dresden patterns use a smaller center circle with longer blades. This is a treasure. Thanks for showing us.