Seen (once, obviously) as a child, never forgotten. Almost impenetrable accent, though - but isn't the pure piping of small children, in whatever language, both miraculous and devastatingly beautiful?
Disclosure: I have seen it once since, in the 90s; hadn't realised till then it was Scottish, of course - in the largely pre-TV 50s we were pretty well isolated in our linguistic ghettos (no bad thing, you might think, if it helped preserve such accents); mine was London, where hearing American spoken was an Event (even a black bus conductor was still a rarity) and the daily attempts of Children's Hour to familiarise me with non RP forms of speech via a motley collection of dodgy-sounding announcers from the 'regions' fell on decidedly stony ground; I knew what English was supposed to sound like and the outlying tribes had better get used to it. (In the end I am afraid that is more or less what is happening as our respective dialects are shorn of local peculiarities and we all talk txt.)