Before revision: Errors in the plot Incompatible features: errors in chronological compatibility errors in the depiction of natural phenomena errors in the depiction of technological processes Invalid features: errors associated with the ownership of territories mistakes in state and religious symbols errors related to personalities Errors in inscriptions or overprints (in numbers, names, concepts) Typos, clerical, spelling, punctuation mistakes Semantic, factual errors See also Errors, freaks, and oddities Inverted Jenny Bibliography Jean-Pierre Mangin, Guide mondial des timbres erronés.
After revision: Errors in the plot Incompatible features: errors in chronological compatibility errors in the depiction of natural phenomena errors in the depiction of technological processes Invalid features: errors associated with the ownership of territories mistakes in state and religious symbols errors related to personalities Errors in inscriptions or overprints (in numbers, names, concepts) Typos, clerical, spelling, punctuation mistakes Semantic, factual errors See also Errors, freaks, and oddities Bibliography Jean-Pierre Mangin, Guide mondial des timbres erronés.