These need some logic applied...
Let's assume that the pennant numbers are saying (Schar) III / (Jungmädelschaft) 71.
Taking the RJF nominal figure of 10 girls per Jungmädelschaft that would put the strength of this Jungmädelschar III at 710 girls making it around 4.7 times bigger than its parent unit, the Jungmädelgruppe. However, Mädelschaft pennants were not numbered anyway so we can discount this scenario straight away.
Alternatively, Let's assume that the pennant is saying "(JM-Schar) III / (Jungmädeluntergau) 71".
Well, we can discount that straight away too because because neither the BDM nor the JM Schar pennants were numbered.
The DJ flag is ostensibly for 'Oranien' which is not a place but rather the royal house in Holland. So we have a patchwork, black and white HJ flag with DJ reverse carried proudly by HJ/DJ with royal connections? Not a plausible situation or flag for me..
I note that the proprietor of Oakleaf doesn't know what they are. Still wants a couple of thousand though of course..