Floor lamps and table lamps

I searched for this topic the best I could but, did not locate anything about it so, I apologize for possibly beating a dead horse.
My wife and I scour a lot of auctions. She sells on EBAY and CL and I sell on CL and scrap. I was researching a floor lamp I acquired and found out that some of them can bring in much better than scrap price. Take a look at the bottoms for markings and see what you can find out about them. Also, look at lamp shades. There are some vintage shades that sell between $30 and $75. Of course you could just toss them, they'll become more rare and we'll make even more when we find them.....lol.

Well, I thought it was relevant enough to post.
When we get 4 lamps for $2.50 and sell them
for $100 +/_ I call it a score...
I appreciate your thanks Bear.