WH (Heeres) hand-embroidered, trade- ie. special-career arm-patch as was intended for a: 'Sanitäter' (or: medical orderly) being a maker-marked example as executed on darker-green-coloured wool

This is an attractive example of a WH (Heeres) so-called: trade- and/or special-career arm-insignia (or: 'Laufbahn- o. Tätigkeitsabzeichen') as was specifically intended for usage by an army: 'Sanitäter' (or: medical orderly) and that comes in an overall very nice- (I deem simply never worn- nor tunic-attached-) condition. The neat patch is executed on a darker-green-coloured- and/or woolen-based background and shows a (detailed and/or neatly hand-embroidered) 'aesculapus'-sign as executed in bright-yellow-coloured linnen. The maker- (ie. 'L.W.B.'- or alike) marked patch is nicely 'backed' with a piece of greyish-blue-coloured linnen as more often encountered. The patch shows some minimal staining simply caused by decades of storage only. This particular example originated from a large cloth-/shoulderstrap-collection I recently acquired. Simply a very attractive WH (Heeres) trade-/specialist badge as was intended for an army 'Sanitäter'!