So you can find the serial number of the publisher

BILD und HEIMAT - Reichenbach im Vogtland

Learn how to find the serial number of the publisher on his postcards.
Publisher serialno.: 1454
Print year: 1967
Publisher serialno.: 01 02 08 116
Print year: 1979
Publisher serialno. 01 01 0654/12
Print year: 1987
Publisher serialno.: So 1756/6
Print year: 1990
Publisher serialno.: 17 3 0402 K
K: Kundenauftrag
Print year: ab 1991
Publisher serialno.: 4/141K
Print year: 1960
Publisher serialno.: 13/3360
Print year: 1968