Although it might not seem it, "–" may well be an unusual character
In the picture, it is a dash and not a hyphen. But there may be some weird interaction.since it ought to be an en-dash rather than a hyphen.
Possibly, but the TV show didn't end in approximately 1975. The final episode of the series was broadcast in April 1975.
In the picture, it is a dash and not a hyphen. But there may be some weird interaction.
A possibility that occurs to me is that it could be the result of attempting to concoct a symbol that means "approximately". Sometimes people use the '@' sign for this.