Thanks for all the input! Sound like these are the ones to keep.
The cymbal sizes are: 21" ride, 18" ride, 16" crash and 14" hi hats. They are all pretty shiny and they all have the same identical stamp on them.
I found them in a Craigslist ad. I saw them Sunday night and sent a note. The owner called me yesterday and said that they were available, so when I looked at them, I bought them. They guy said that he had over 100 emails but he called me first! I'm glad he did.
There were a lot of extra parts that came with it, like these things. They were on the ride cymbals. They say Camco on them. What are they?