From: Pittsburgh, PA
If you're making multiples from the same pattern without a plan to stop, they'd be considered an open edition. And I would select "other" as the certificate type since only your prototype would be considered the original.
I'm not sure what you mean regarding multiple COAs for the same item. Do you mean, more than one for a single doll, or do you mean a COA for each doll from your original file on our site? If If it's the latter, then yes.
Get out of the vacuum and express yourself!