I worked in Mental Health for over thirty years and although retired now I still sit on Managers’ Panels (Tribunals) for our local NHS Mental Health Partnership Trust. I think collecting banknotes is a positive and healthy interest for any person as it requires a keen interest, a bit of knowledge and a determination to find the ‘right’ notes for a personal collection. Banknote collections indicate a person who is not depressed but who has drive and determination. So keep collecting and stay mentally fit and well.