maximum card
a postcard with a postage stamp placed on the picture side of the card where the stamp and card match or are in maximum concordance (similarity)
en-GB/ˈmæksɪməm ˈkɑːd/
en-US/ˈmæksəməm ˈkɑɹd/
a postcard with a postage stamp placed on the picture side of the card where the stamp and card match or are in maximum concordance (similarity)