The 1950s American television series with Ronald Howard and Howard Marion Crawford mostly avoided the buffoonish image of Watson and portrayed him pretty faithfully, but aside from that, the idea of Watson as a buffoon dominated in popular culture until the Jeremy Brett series came along.
Which is why the Jeremy Brett series is my favourite "classic" Holmes.
Though ironically despite the Cumberbatch/Freeman version doing a good job of this aspect, it's probably my least favourite of the three "main" adaptions from that era (IMO, the Downey/Law version gets points for leaning into the more physical side of Holmes' skill than most, and Elementary gets points for taking the spirit of the characters and doing something novel and interesting with them while modernising the "core concept" more successfully than Sherlock did).