The Munsters (1964)

S2E10 A Man for Marilyn

In a bid to secure a suitable husband for the unfortunate Marilyn, Grandpa concocts a scheme to transform a frog into a prince. He deliberately selects a short-sighted frog, hoping its poor vision will make it less judgmental of Marilyn's appearance. However, unbeknownst to Grandpa, the spell goes awry, leading him and Herman to mistakenly identify a random passerby as their enchanted prince.