What a wonderful masterpiece you acquired. I hope someday I can learn to quilt as good as that is. I just finished a quilt today, it is a strip quilt and using the longest stitch I could, sewing a straight line diagonally down the quilt, it puckered. So I had to take out and sew by hand the puchkered area. Now I can choose some of my stash and get your block started.
quilter 70