Fun fact: In some fields in the UK (such as horse racing and the sale of livestock) we still use the Guinea, a unit of account that went out of use in all other fields over 200 years ago
A Guinea is 21 shillings or, in modern currency, £1.05
@troubleMoney I'm biased towards metric anyway, but that sounds exactly the kind of measure chosen to be as obtuse to work with as possible.
