I lived in Glasgow late 80s, early 90s. There was an Italian restaurant at the bottom of Sauchiehall Street (ie near corner of Buchanan Street) that had an an amazing window display.
It featured bread and pastries and I'm pretty sure there was a gigantic doughnut? It looked real, I don't think it was a pretend doughnut.
Actually thinking about it, it was a ring doughnut not a jam one.
Am I making this up? Anyone remember this?