The following chart shows major changes. In general, the red labels are oldest, and then the white and yellow. Due to reissuing of older rollers, and evidently the mixing of current labels, anything is possible. In addition, there are no certain pairings of labels. Although the matching circles are often found together, many are not.
Misprints also seem to appear often.
I would be interested in purchasing any examples of marked styles, as well as any styles not listed below. View red July No.