How are you getting these for 0.21 when even the postcard rate is 0.35?
Speaking of rates, here is a 1930s cover from Syracuse, NY noting Lincoln stopped there on February 18, 1861 and his funeral train passed through Syracuse on April 26, 1865. No idea which date the cachet maker was trying to commemorate since he used 1.5 postage to pay an unsealed 3rd class mailing rate and the PO (properly) canceled it with a dateless dial in their machine!
