I, too, do not think the ERSs are Kliegl, they look more like Century (Lighting Corporation of America) to me. I don't see lamp caps on either of them, and if so,
asbestos is not an issue. Paint them up nice, and make table lamps out of the fixtures, and put them back on ebay for a nice profit! You'll need to fabricate a
yoke for the one on the right, but that's not difficult.
As for
amber drift, all
incandescent lamps exhibit this phenomenon. If these fixtures had their original medium
prefocus sockets, the EGG lamp would give a
color temperature of 3200K. They may have come with a medium or
mogul bipost socket, and would need a T14 lamp. The 8" may have taken up to a 1M lamp, but the 6" topped out at 750W.