1969 Australian Queen Elizabeth II Penny?

The larger pre-1998 50 Pence coins were withdrawn from circulation and demonetised in 1998. So, unless they are part of a Proof or uncirculated mint set or are individual Proof or uncirculated coins and in absolute mint condition, they have little or no value. A British 1969 cupro-nickel 50 New Pence coin (heptagonal)(Elizabeth II), uncirculated and in absolute mint condition could fetch up to £2 GBP.

A reputable coin dealer will be able to give a more accurate valuati Read more: http://wiki.answers.com/Q/What_is_the_va...

If it's got any wear at all, it's only going to be worth face value (and only then if you exchange it at a bank for one of the current ones). Even though Britain "went decimal" with their money in 1971, the 50p coin was one of three introduced before then. The original 5p and 10p coins were the same size and specs as the old shilling and florin coin, so they were introduced early, used as shillings and florins until the change over, and then continued to circulate (along with old shillings and florins) until they were resized in the 1990's.

The 50p coin was also brought out early, to replace the 10 shilling note that had been in circulation.