ROYAL BABY *PRINCE GEORGE of CAMBRIDGE" BRITISH ARMED FORCES 50 NEW PENCE 6TH SERIES BANKNOTE! ROYAL BABY - Prince George of Cambridge (George Alexander Louis) - Born July 22, 2013. Uncirculated British Armed Forces 50 New Pence 6th Series Bank Notes The British Armed Forces issued their own banknotes between 1946 and 1972. This currency series has the inscription '6th Series' written on top of the banknote value number on one of the two faces. This currency series was released because the United Kingdom had changed over to decimal currency.