The next Marvel Disney+ series, The Falcon and the Winter Soldier, premieres on the service on March 19.
From its earliest days, Marvel took unusual care and pride in its issue-to-issue, series-to-series continuity.
Sometimes, they made mistakes and continuity errors cropped up.
(Although it was started as a letter column joke, Marvel eventually began mailing out No-Prizes, which, in accordance with their names, were simply empty envelopes.)