I do hope this isn't a road to the term 'pint' just becoming a generic name rather than actually holding meaning. I remember when a 99 referred to the price!
The british pound once referred to the value of a "pound" of silver at the time. Though the meaning of even that measurement of weight has likely changed
Lion and Unicorn? Probably? The actual crown itself has a fancy form of copyright on it where you cannot really use it on anything except for historical stuff or tacky memorabilia celebrating the likes of a coronation, jubilee, birth, death, etc