Welcome to the forum. The weights should be on a plate by the door. If you have a look at the CRIS number etched on the windows, the tenth digit will give you a year so a 6 would be 2006. If you look at the Bailey website you should be able to download a handbook.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.