A year later, the 1970 Coins and Medals Annual (later to morph into the Coins Market Values annual) listed some interesting prices, including the following two:
1932 penny BU ..................... £50 (probably around £500 at today's RPI?)
1797 twopence BU .............. £35
The 1932 penny has probably doubled in price, i.e. a long way behind inflation, whereas a genuine BU 1797 would probably fetch £1000 in that grade.