I took a punt last year and can honestly say I haven't even looked at them, apart from bagging and putting away.
I suppose decimal's are appealing to new collectors and we have 50 yr old 1968 10p's blimey.
In fact I have a shoe box with rolls of 60's cu,1950 3d's av circ,Scottish 1959 1/-'s,decimal rolls and other tat.