The florin was a very late addition to the system (1848) and a very conscious step towards decimalization; the first two major designs said literally "One tenth

The florin was a very late addition to the system (1848) and a very conscious step towards decimalization; the first two major designs said literally "One tenth of a pound" on them. It's surprising there was no obvious pressure to squeeze the half-crown out of circulation to pave the way towards a decimal model.