Gender: boy
MOJZESZ KRAJSKOPF was the first results that came up when I searched for M. Krajskopf. He was born 14 Jan 1921 and he lived at HANSEATEN 20 10, BIER 35, and a date of 26.9.43. He also appears at MOJZESZ JUDA KRAJSKOPF PFAUEN 7 3 and SKLADOWA 32 and moved on 19.8.42 to BIER 35. I also found him as MOJZESZ KRAJSKOP and living at BIER 35 flat 1.
I don't know how I missed Majer Rachmil Krajzkopf in my earlier research. He is also a match and he appears with the birthdate 22 July 1924 living at Kelmstrasse 60 flat 5 and student as an occupation. He then appears with a slightly different birthdate of 2 July 1923 and occupation of Uczen.