Color varieties of postal cards
I recently came across an unusual(?) variety of the Simon Sam 3 centimes double reply postal card (H&G 6). The normal card was printed on lilac cardboard, but this one has a light green background instead:
I wonder if cardboard varieties like this exist for other issues, too. If you have any, please post them here.
Comments
The scan below was supplied by Eric Roberts:
One H&G 6 postal card in lilac (original color) and two cards on whitish cardboard.