1510 Love Stamps. Love is in the air, love is on our minds and in our hearts, and love is in the U.S. Mail! Designer Lois B. Sutton has arranged this gorgeous collection of stamps going back to Robert Indiana’s iconic LOVE graphic � issued in 1973 and only 8 cents! With a finished size of 24� x 30�, this puzzle has 1,000 pieces and 27 unique stamps.