Hi Martin,
It is perhaps worth noting that in both the 1929 & 1930 catalogues, amongst the list of extras is the option of 26 x 3.25 (3.25 x 19 in “modern” tyre sizing) in place of the standard 26 x 3.00 (3.00 x 20). This would have cost you an extra 10 shillings.
Good luck
Martin
