Something missing surely

Locomotion is the name of this statue near Glasgow city centre. It's supposed to represent the 'power and virility' of railway travel and stands outside the old British Rail HQ.
But if you look very closely there's obviously something mssing from the poor guy which would affect his virility pretty dramatically.
I didn't think we were ever prudish in Glasgow but maybe when the statue was erected - if you'll pardon the expression - in the swinging 60s, attitudes were different. Still, it's been a talking point ever since.