Attractive - and actually rarely encountered! - WH (Kriegsmarine) armband (or: 'Dienstarmbinde') as was (I deem) specifically intended for (graduated!) staff-members within one of the naval officers'-cadet-schools

This is a truly very attractive - and with certainty rarely encountered! - WH (Kriegsmarine) armband (or: 'Dienstarmbinde') as was (I deem) specifically intended for (graduated!) staff-members ie. students or cadets serving within one of the naval officers'-cadet-schools and that comes in an overall very nice- (ie. I deem never used- ie. 'virtually mint- ie. unissued'-) condition. The neat armband - which was 'off-factory' sewn-together measures folded approximately 37 x 11 cms. in length - shows the typical, WH (Kriegsmarine) anchor-device as woven in black- (ie. golden-yellow-) coloured linnen on a white- ie. somewhat beige-coloured and/or linnen-based background. The piece - which has I deem simply never been used nor worn - shows some minimal storage-age and/or staining - and shows the (typically additionally added) light-blue-coloured borders. I am personally quite convinced that these naval armbands were worn by students serving within one of the naval officers'-cadet-schools, however, another reference-book mentions that these armbands were intended for soldiers having: 'Havariedienst' (I deem some sort of harbour-service). In any case is this a very nice - and with certainty rarely seen! - Kriegsmarine-related 'Armbinde' that is priced according to its desirability and/or unmistaken rarity!