Winnie, I pulled these from a couple of hundred I found in a collection about a year ago. Most of them were beat beyond help. Among the ones that only had surface abrasions and hazing, and some minor dings, I thought these were interesting enough to have polished - even though they are standard size, many have nice cores and colors.
They weren't collectible when I found them, and they aren't collectible now, but they sure look nice in a little glass vase in the window. As for the pontils that were saved on a few, the polisher apparently knew what they were doing, and I'm very please with the results.