anaxcrosswords.....I am in exactly the same position as you are. I bought a Cross Rolled Gold Pencil on ebay, and it still hasn't arrived after 2 weeks.
I have been in communication with the seller and we are both waiting another few days, to see if it arrives. But I am not hopeful and the seller has already said that she will refund my money without any further delay.
This pencil I bought for £15:00 is worth £85:00 new ! My mistake was not paying for a signed-for delivery, which would have been very much safer.
Due to having worked for a company, for many years, that had close links with Royal Mail, I should have known better. Theft is widespread in Royal Mail. I have seen things that would make your hair stand on end !
If a signed-for delivery is not used and the item is valuable, then there is a high chance that it will "get lost" Your item and mine hasn't disappeared...they have been stolen.
In my case, as I won the pencil at a very cheap price, I should have used a signed-for delivery, and it was a false and silly economy on my part not to do so. Its a mistake that I won't make again. If the pencil ad been make of steel or plastic, then I would have had it by now. Sticky fingers and gold are a dodgy combination !