On Tue, 1 Jul 2008 22:42:27 +0100, Graeme Wall wrote

Yes, but you appear to have forgotten the convention for writing the
amounts down. It would be either "1s 3d" or "1/3". If one of your
prices
had been 1s 4d, then the way you wrote them would have indicated a
farthing.

Thought it would also have been set off as 1' 3".

That's one foot three inches.

Indeed it is, but I believe that such quotation marks are used for other
things as well.

As someone else has pointed out, for angles, but not, in my experience, for
monetary values. Remember the default was 3 values, pounds, shilling and
pence, the use of ' and " wouldn't allow that.

I was also around during the pre-decimal era and only ever remember seeing
£SD written as 3s 6d or 3/6