I work on a fund-raising project every year with a very creative friend. She sends out Valentine's greetings every year - when I got mine in the mail the other today, it reminded me of these blocks. As we worked on the project last fall, she said she found these crazy quilt blocks at a sale years ago. She threatened to take them to our local thrift shop if I didn't want them. So now they are mine. There are 15 blocks, each is 18" square. Most have elaborate embroidered flowers on them. They are worked on a foundation, made mostly of silks, and are in excellent shape.
This is the back side of the block shown above.
Here's a detail of another block.