A good friend was having a sort out of his Great War books and gave me some that he no longer wanted. (How does that even work?)
I was flicking through one of them and out fell the form given to men when they enlisted in the Territorial Forces. It's dated March 1923.
It was a book bought at a charity shop and nothing to do with my friend or his family.
My aim now is to return it to the family before its 100th anniversary - a project that is right up my street. I will post an update soon.