is there a significance as to why many currency symbols use a double strikethrough?
In: Economics
Funny thing.
Most currencies use a horizontal one € or ¥ for instance.
It is simply an = sign symbolizing stability.
The vertical bars of the the $ came from its origin as a Spanish colonial currency. They represent the pillars of Herculese, the former name of the the Gibraltar straight.
I remember as a kid learning that the dollar sign originally was US stacked on top of each other and over time the bottom of the U was dropped to the sign we have today.
The origin of the lines on the dollar sign is probably the peso.
Originally its symbol was ps, and gradually the two letters were combined, until they formed the current symbol.
This is by the way only one hypothesis (and probably the most prominent) regarding the origin of the sign.
Although not answering the question regarding other currencies, it gives a perspective for how the dollar sign has evolved.
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