There were no 1927 British Florins minted for general circulation.
There were 15,000 Proof FDC 1927 Florins minted featuring the new reverse design.
The last British Florin minted for general circulation was minted in 1967.
The last British Florin was minted in 1970.
There was no 1861 British Florin (Two Shillings) minted.
The last British general circulation Florin was minted in 1967.
Such a coin does not exist. The Florin (Two Shillings) was first minted for general circulation in 1849.
The first British Florin was issued in 1849, so it is unlikely that there would be a Half Florin coin minted any earlier. There was never a British coin called a Half Florin. If one existed, a Half Florin would be One Shilling.
The 1927 British Florin (Two Shillings) was not issued as a general circulation coin, it was only released as a "Proof FDC" and a "Matt Proof FDC" coin and there were only 15,000 minted. The Matt Proof FDC coin is described as being of the highest rarity. The Proof FDC coin would perhaps be described as being scarce.
The first British Florins were minted in 1848 as a tentative step towards decimalisation.
There was no British Half-Sovereigns minted from 1927 to 1936 inclusive.
A British 1970 cupro-nickel Florin (QE II)(Proof FDC), uncirculated and in absolute mint condition could fetch up to £10 GBP. There were no general circulation British Florins minted after 1966. A reputable coin dealer will be able to give a more accurate valuation.
No British general circulation coin minted after 1947 contained any silver at all.
The British Double-Florin was issued from 1887 to 1890 inclusive. It proved very unpopular due to its size and weight. As with all British silver coins of this period, they were minted in sterling silver or 0.925 fineness.