I am fascinated by them. I first learnt of them in Tom Slemen books.

Just found this online http://www.parascience.org.uk/articles/time.htm

Does anyone know of anyone who has had one? or had one yourself??

Arn't they what you complete to make sure you get paid your wages?

nope

I remember once getting off the train and walking into a shop and seeing all these people in very unusually old dress fashion/sense! I then realised I was in Birmingham.