"I'm pretty sure these are both shades from the electric lamp era. My guess is that the first one was for use in an area subject to vibrations, and the socket with incandescent bulb in it would be held by the ring attached to the springs. This…"
"I'm not sure which is better. I think most people who use this type of fixture will have it restored and polished, though some prefer to do the work themselves. I would not electrify it, however, as some collectors might prefer the original gas…"
"My guess at the age is late 19th to early 20th century--say 1890 to WW1. I think the wires were an unusual type of shade holder. A glass shade would fit over the wires with the curve at the upper ends of the wires fitting over the top of the open…"