This is a Verwundetenabzeichen schwarz / Woundbadge black (maker “93”) + citation.
The citation is on name of Hans-Joachim Döring, Maschinen Maat from 1./6.B.L.K. Bremen. It is signed by the Oberfeldarzt und Chefarzt des Reserve-Lazaretts III Bremen.
The woundbadge self is in worn condition, it is maker marked with “93” on he back, this stands for maker B.H. Mayer from Pforzheim. This is a very rare black woundbadge to find!