WWPCM01521 Backs printed in 1920s

d01521r122 d01521r133 r133box d01521r362 r362box d01521r370
d01521r414 r414box d01521r429 d01521r430 d01521r431  
d01521r090 d01521r091 d01521r322 d01521r322c d01521r322b d01521r360
d01521r055 d01521r055c r055b/1918 d01521r055d d01521r323 d01521r037
d01521r023 r023/box d01521r068 d01521r480 d01521r160 d01521r057
d01521r099 d01521r060 d01521r061 d01521r392 d01521r393 d01521r394
d01521r153 d01521r095 d01521r386 d01521r389 d01521r390 d01521r391
d01521r436 d01521r468 d01521r469