I was asking as I was clearing out some draws and found issue 1 of Performance bike & Mechanic (as it was called from the first edition, later to be called just performance bike), and a collection of tram postcards which my grandfather collected.
The Hull daily mail had a run on tram postcards. Collect the token every weekday and a Saturday and get 6 differing postcards. Do this every week for several weeks and it was quite a collection. This must have been around the mid 70's? but they've followed me around for many decades with most of the white background now having a light biege tinge to them. Weird the things some people keep/collect.