HJ General Service Bann 161 Duren of note a honour name was granted by the RJF but the honour name for 161 was granted personally by Adolf Hitler as the last honour name Paul Thewellis was from Duren and killed 1-23-1931 rank of Hitler-Junge
Steve, the Saris book has a photo of a set of Flieger 865 straps. The photo caption says 'It is not known what Bann 865 is for as this number is not listed as official in any availible lists up to the end of 1941'.
The Saris lists don't show any information on Bann 865. They show the Bann number but no data at all.
Maybe Garry has additional information on this Bann from his own research from his library of period publications. That's probably your best resource for information on this Bann number.