Black gloss picture frames as I mentioned in a previous post scratch easily. These are not frames to choose if the picture will sit on a desk or be moved regularity. They are fine if they are to sit on a wall for years.
The picture framer will take special care with this kind of frame to avoid scratching the moulding before the customer picks up their order. Unlike most mat picture frame mouldings, once scratched the high gloss frame cannot be touched up without it being obvious.
The high gloss finish black frame is a star frame though. Put together and handled carefully it shines and brings a certain richness to any photograph.
I wouldnt use it on anything but small photos. It looks incongruous on artworks, paintings etc.