Thank you Marcia..
I asked others in my guild and they seem to have the same reaction. "Huh?.. who knew?".
To be fair, when we recycle, everything gets thrown together.. stoneware.. porcelain in a large drum and then our claymaker puts it through a complete re-mixing, etc.
Maybe the clerk was saying that one couldn't recycle it as its own clay body back to an original "Coleman Porcelain".
Anybody else have input?