As found on the Internet

C.1930 Czernowitz Hebrew School and WWI Austrian war stamp.

Class pictures with file names such as 44_1.jpg are the original pictures; 44_1a.jpg is a post processed version.

44_1.jpg	44_1a.jpg	b4_1.jpg
b4_1a.jpg	b4_1b.jpg	f0_1.jpg
f0_1a.jpg	fd_3.jpg	fd_3a.jpg
fd_3b.jpg	stamp2.jpg	ww1cz-warstamp.jpg