I have these skirts and have no idea what they are. I'm sure they are aftermarket because they a not a heavy build. Look a bit like 55 merc wagon style.
If you look in the thread ***led Kustoms Blues? I need to see some Kustoms , post #642 & 646 show a 57 Ford convertible that has skirts that look a lot like the ones you have pictured.
You might be right. I''m thinking they are for what ever fits and no particular car they came off of. They are similar to the skirts i'm going to use on my 56 vic but shorter, curvier but narrower. I'm not sure what the skirts i'm using are from either but i think 56 merc wagon. They are really heavy built. I have to narrow them a bit thou.
They're aftermarket cruiser skirts, the short (length) and tall style, more for mid 50's cars, as opposed to the longer ones which are more late 50's era.