What you get for a caravan of that age depends on condition & presentation. Clean/polish inside out including in the cupboards & empty it of all the gear not included in sale. Buyers need to be impressed, it needs to be better than everything else they have viewed. If you are going to list on ebay either auction or classified then full set of pictures & good description but avoid making any specific claims 'like completely dry' or 'perfect condition'.
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.