Now that OK has revealed her MB I can reveal its source, the block is called Yvonne's Mystery and can be found in Quiltmaker's 100 Blocks Volume 4. I have been going through all my books looking for just the "right" block to make for everyone. I am so happy you like it.
These are the photos I took of the PC quilt and the Daisy quilt on Thursday. Will also post in Pictures for everyone to see.