Yes, it would be interesting to have more opinions on it - I'll try to do that. The buttons may have been replaced at some point, of course, and it is technically quite possible that a garment from around 1950 could have overlocked edges, but it's not very common, in my experience. I had a closer look at the interfacing and I don't think it is actually heat fused, it just has that fuzzy feel that fusibles tend to get when they are old, worn and have been washed a few times. It's a woven, too.

The cut of the skirt is the kind that might be a mid- to late 70's flared midi skirt as well as a New Look kind of skirt, and I suppose the same goes for the jacket, since it's pretty fanciful and anachronistic for either period. It has a defined waist and lots of emphasis on the hips and butt, with big decorative pocket flaps and some extra flare in the front, and all that extra width from the waist down in the back. Not the rounded curves that I would normally expect from a 50's suit jacket, though.