Interesting discussion about interesting times. Little or no mail service, none of those infernal telephone devices. Walk or ride a carriage or a horse. And except in the larger cities, little or no advertising other than word of mouth. Makes one wonder how things ever got done.
One mention early on in the discussion: A gentleman requested a rifle be made for 5 Guineas. Now, when young, I had to learn to do the addition, subtraction, multiplication, of pounds, shillings, and pence. Still have a few scars on the backs of my hands to "imprint" how to do it correctly.
And we had mention of Guineas, being 21 shillings versus the 20 shillings to the pound.
But - WHY? Why were Guineas used? Just about as easy to write 2 pounds, 2 shillings, as to "2 Guineas". And to be honest, while I was in England I never saw a Guinea note.
I did enjoy the British monetary system. In my mind, it was more flexible that the current decimal system. Imagine, farthings, ha'pence, tuppence, thrupence. And of course, the six pence of noted song. Made it a bit more difficult to add or subtract, to be sure, but there was a wonderful beauty to that system that is lacking today.
Tuppence for your thoughts.