Kitty, I think Chris must have lent it to Sid...or maybe they had identical ones? ;-)
Which reminds me of the old joke about Noddy Holder going to the tailor for a new 'ensemble' - having been measured for the suit and chosen a couple of shirts, the tailor, in the hope of supplying the finishing touch helpfully suggested "kipper tie, sir?" to which the redoubtable Slade singer said "ta very much - two sugars please"...