Árpád Mühle in his catalogue: Mühle Árpád, Rózsa Katalogus 1908, Temesvár,
is mentioned under no. 1556. ´Batchik Effendi´. (Ketten fréres=Ketten brothers, 1898),

the name means ´Uncle Effendi´ Effendi is a title of nobility meaning a Lord or Master. See Effendi in wikipedia: https://en.wikipedia.org/wiki/Effendi