In reply to Erstwhile:
I also bought one around that time, but I have never had any problem with the quality of the pick.
I think later on the "design" developed a little: the pick on mine is more curved, with a larger hole for a leash, whilst the adze also has a hole, presumably for a krab for belays.
Overall mine (around 60cm) weighs just over 900 grammes, so about 40% more than a modern Scottish axe.
Many thanks for the catalogue scan: great nostalgia!