@enochcity@stressedcoffee
The way I read it, they use a weight in shillings that is equal to the weight of one of those gold coins as the measure. Like, if it weighs half a pound, then a "gold coin" is half a pound of silver coins, which depending on the size we are talking about could be 15, 40, or even 100 silver coins. They seem like they have several different valuations of silver coins too, and I guess the monetary value is directly in line with it's weight, which is how it was done when coins were minted from precious metals.