In the box with the papers was this small pointed bit of plastic, I think it was in the Ceramic Seamaster box. Any ideas what it is for?

 

Looks like a pusher tool. Don’t know the correct term, but some watches, for example moonphases, have recessed pushers that need a tool like this to press.
Edit: photo added. Nicked from google images.

 

It's a stylus used to set moonphase or calendar watches with the little hidden buttons on the side of the case.

 

Usually those plastic pins are used on the pushers to set watches such as the moon phase complications.
I can’t say which watch was in the box.

Example:

 

Thanks guys
It's actually for a Speedy Racing, to set the date, isn't life easier if you know where to start from