Best not to show the wife...mine is now numb to the whole milsurp malarky! She has, in fact, gotten quite good at opening the mail and describing the recently arrived items when I am away travelling...
I remember your post of the size 5 smock you mention...two size 5s in good nick for £15 is a steal.
From what I can tell - Beaver of Bolton only had one contract run of 68 smocks. I have never seen trousers by this manufacturer.