Your quilt most closely resembles a pattern listed in Brackmans Encyclopedia of Pieced Quilt Patterns called Alices Favorite. According to this book, published by Mrs. Danners Quilts in 1934 and also published as Ragged Robin by Alice Brooks about the same time.
That being said, I have the original Mrs. Danner catalog from 1934 and do not find the pattern listed. However, there is a pattern in the catalog called Ragged Robin and it is an applique pattern that has absolutely no resemblance to this block.
I will be seeing Helen Ericson on Tues. She bought Mrs. Danners patterns in 1972 and owns it still today. I will ask her about this and get back to you.