just to add a data point for Brooks Pro's... I've got a Pro that was on a '74 Raleigh International that I bought NIB back around the year 2000. I definitely got lucky!

The Brooks Pro is the type with small rivets, as seen in the Raleigh catalog of the day. The date code on the cantle plate is B73, and there is a code inked onto the leather with "L" above "HP".

top view


side view of the logo embossed into the skirt


a look at the badge on the rear. It lacks the "England" underneath the "Brooks" that is on my newer Brooks


the B73 date code on the cantle plate


the ink stamped code on the underside of the leather



Steve in Peoria