You sure that's not just shrinkage due to washing? The standard DJ rune patch like yours only came in one size (rune diameter 55mm). The square patch is mentioned here: Show your Deutsches Jungvolk DJ sigrune sleeve patches
In 1934 the diameter was also 55mm. This is shown in the period documentation. Prior to that, well, prior to July 1933 there was much more variation but your type of patch is the later standard version.
From 1933 to 1935, the 6 Jungvolk-Siegrunen were manufactured in 2 pattern.
Illustrated here is the 1st pattern in the colors of Oberbann 5 (white on black) and the 2nd pattern in the colors of Oberbann 6 (black on white).
For the little story : It takes on long time for me to find the 1st pattern in the colors of Oberbann 1 (white on red)... the badge who's the most widespread in the 2nd pattern. The mysteries of collecting.