The Master of the Black Hand was Dragutin Dimitrijevic, quote from first sentences of link" Also known as The Bee, Colonel Apis, No.6 or Most commonly, APIS", when you get to link please click on APIS, to show this is just another name for OSIRIS in Egyptian mythology!
Dragutin Dimitrijević - Wikipedia, the free encyclopedia
Obviously a follower of the secret Hermetic philosophy!