Probably nothing. Modified coins have no collector value.
Good luck if you have one, but the last British Sixpence was minted in 1967.
The British Threepence was first issued around 1550 and last issued in 1967. The British Sixpence was first issued around 1550 and last issued in 1967. The British Florin (Two Shillings) was first issued in 1848 and last issued in 1967. The British Halfcrown (Two Shillings and Sixpence) was first issued around 1526 and last issued in 1967.
Half a Sixpence - film - was created in 1967.
Half a Sixpence - 1967 is rated/received certificates of: Finland:S Netherlands:AL (orginal rating) Sweden:Btl UK:U
Pictures of a specific coin are difficult to come by. Frequently you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. All British Sixpences issued from 1954 to 1967 inclusive are near identical. See the link below for a 1956 Sixpence.
The British Sixpence - from 1953 to 1967 weighs 2.83 grams from 1947 to 1952 weighs 2.83 grams from 1937 to 1946 weighs 2.827 grams from 1920 to 1936 weighs 2.876 grams from 1838 to 1920 weighs 3.01 grams from 1816 to 1837 weighs 2.827 grams
The last British general circulation Florin was minted in 1967.
It would depend on which "Pence" you refer to. The British Penny and Halfpenny were made from bronze from 1860 to their last minting in 1967. The British Threepence and Sixpence were made from sterling silver from 1816 to 1920, and from 1920 to 1946, they were made from 50% silver.
The last British Florin minted for general circulation was minted in 1967.
A British 1962 to 1967 cupro-nickel Sixpence (QE II), uncirculated and in absolute mint condition could fetch up to £1.50 GBP. If it has been circulated, not much. A British 1957 to 1961 cupro-nickel Sixpence (QE II), uncirculated and in absolute mint condition could fetch anything from £2.00 to £10.00 GBP, depending on the year. If it has been circulated, not much. The values quoted are the best available, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
The British Sixpence has never been issued as a bronze coin. The British Sixpence was first issued around 1551 and has been made from silver of varying quality until 1947. From 1817 to 1920 it was made from sterling silver. From 1920 to 1946 it was made from 50% silver and, from 1947 until its last minting in 1967, it was made from a copper nickel alloy. Depending on where and how the coin has been stored, a discolouration may have developed on the coin giving it a dirty gold, or perhaps a brownish colour.
Pictures of a specific coin are difficult to come by. Frequently you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. All British Sixpences issued from 1953 to 1967 inclusive are identical other than for the year.