u/b, come VALENTINE SERIES or VALENTINE POST CARD SERIES, the same basic Outcault images occur in all his Valentine sets, with or w/o PRINTED IN GERMANY
set of 6 cards
13/02/1906
United States of America
OF ALL THE DAYS IN ALL THE YEAR THE DAY OF DAYS TO ME MOST DEAR WHEN I CAN SEND THIS HEART OF MINE TO MY BEST BEST BEST VALENTINE, WHO? YOU