Hi @karupanocitizen
Interesting topic you have shared of these widely used symbology. The truth is that I had never been deeply investigated about it, I had read about Wall Street, but the other possibilities of origin were completely unknown to me.
I believe that everything has multiple explanations, and that it is difficult in this case to have a specific origin of these terms, in addition, it is well known that with the passage of time there are many variations, which makes that the meaning it has today is not necessarily with which it arose.
Thank you for this information.