Label variant images added with lots of differences. The oddball difference is that images 437127 and 437128 have "Swing Music 1939 Series" directly below the spindle hole, while images 1997675 and 1997676 have "Swing Music 1940 Series" below the spindle hole.
A side label image added, and B side label variant image added.The composer credit line is slightly shorter on B-side image # 1997656 (vs. B-side image # 1580770) and the label is light yellow in color.