mint single (position 78) reading "cts. 8" instead of "8 cts." due to horizontally shifted surcharge, this shift also causes the two "Panama"s close together variety (20.8), lightly tropicalized gum very fine, this is the discovery example of this error published by James Crumpacker in the Canal Zone Philatelist (Vol. 38, No. 3) and subsequently the basis for the Scott catalogue listing, we know of at least one other example from the Bates collection (Scott unpriced)