I think that large silver crown coins of Great Britain are some of the most classic of silver coins just like the gold sovereigns.
I become easily confused with the values of the many different denominations of British coins. But I do know that one crown equals five shillings.
Great Britain 5 Shillings - George VI
Commemorative issue, Festival of Britain, 1951
Obverse: Uncrowned portrait of King George VI facing left with legend around of GEORGIVS VI D:G:BR:OMN:REX F:D: FIVE SHILLINGS. (Translation: George the Sixth by the Grace of God King of all the Britains Defender of the Faith)
Reverse: St. George slaying the dragon right, date and Benedetto Pistrucci engraver's initials B.P in exergue, and year 1951.
Edge: Incuse legend in Latin- MDCCCLI CIVIUM INDUSTRIA FLORET CIVITAS MCMLI, the translation is: 1851 By the industry of its people the state flourishes 1951