I remembered watching a youtube video[0] about it. The "vertical bar" 124 / 0x7C is in the original 7-bit ASCII standard. But the 166 / 0xA6 "Pipe, Broken vertical bar" is in the not so standard high ASCII/ Extended ASCII [1].

[0]: https://www.youtube.com/watch?v=BktIY7VbrUs [1]:https://en.wikipedia.org/wiki/Extended_ASCII