I think an op shop dud my girlfriend got me was this Tommy Hilfiger sweater. It has a really closed neck hole like it wanted to be a turtleneck then just gave up. So it can look a bit weird when you wear a collared shirt with it, which is what I’d expect you to do.

And since it’s solid white you can see anything that’s put on underneath it. So you ideally need a plain white shirt because any prints or patterns will just show through. It’s one of those pieces of clothing that’s less of a hidden gem and more like ,‘yep, I can see why this is at the op shop.’