Approver Comments:
I agree that you have found one possible candidate to have signed this name in the album. In 1941 Moszek would have been 10 years old, the right age to attend school #13a. You can enter his address from the drop-down menu: Siegfriedstrasse 9, apartment 28.
There's another candidate, Mosze Zajac, who was also born in 1931, who could have also signed this name in the album. What do you think about him?
Please remember to leave a comment explaining to me and your fellow researchers how you came to your conclusions. Thanks!