Since Upper Deck wasn't using their own past designs for Vintage, they were free to pick and choose whatever they wanted. They were not bound by chronological order, so they skipped ahead from last year's 1963 Topps to 1971 Topps. They gave us 2020 Heritage 18 years early... sort of.
Moving the labeling from the top of the card to the bottom doesn't really hide the fact that they stole the 1971 Topps look. UD also replaced the dot between the name and position with a diamond. But otherwise, more flattery for Topps from Upper Deck.