Re: Today????
"Given inflation,mightn't the Pound be now worth what thruppence was then?"
Not exactly, but close enough. 80 thruppences = one decimal pound by 1971 decimal conversion. By consumer price indexes there has been roughly 1:40 price increase between 1946 and 2015.
So one 1946 thruppence would be worth half a quid these days . For 1:80 CPI ratio we have to go back to 1916.