That happy moment when you think you've found another item for your archive (in this case a postcard), followed by the aaaaargh moment shortly after, when after a careful cross-check with the article you know the image is from, it becomes apparent that the photo* used is a year too early thanks to differences in the advertising hoardings.
* it's a shot of the start of a race at Brands Hatch with the lap counter right of frame (with 60 laps on the board), but taken from the rear, so it's really difficult to identify the cars. But it's same vantage point, same view, same style of shot, so, I'd imagine, the same photographer.