Expired classified advert

[vexed]

I had decided to go and see a car in the classifieds, which I noticed had been listed for 4 weeks. However I never wrote down the number, and now the abbey has disappeared! I presume it may have hit the 30 days. Is there any way of finding the advert or contact details?
I think I have a link (which doesn't work any more) in my history, if that helps....