Pitcher with C inside Circle? Art Pottery? Or Joanna Constantinidis ??

Someone suggested this pitcher might be Joanna Constantinidis work?
Or is it American art pottery? Anyone know maker?
Thank you,
Jennifer

It's a molded piece so may not be studio pottery. Not by Joanna Constantinidis

Yes, it's almost certainly factory made, in quantity. The glaze looks good, which suggests to me that it is fairly modern and might have be made in China for an American company.

Thanks. I've seen it listed as Bauer Pottery but when I went through listed designs I did not see this particular unusual design. The copyright symbol would only have been used after 1954 and California potteries seemed to have incised this mark often but always with their name. The search continues ....

The C is probably a Copyright symbol. Not something you see much on pottery.

America is very strict about copyrighting and that, as mentioned, is an unusual design - I imagine the little shelf there is intended to catch any drips from the lip of the jug? - so that may be what the mark is intended to copyright i.e. the vessel's design.

Your comments gave me some helpful ideas and I found out you can search issued copyrights. Not a lot of potteries obtained copyrights. Stangl did. But what I found was that in 1944 the Cayuga Pottery Company in Ithaca, NY obtained a copyright for a pottery they called "Cornell Pitcher", also for some figurines like "Darby Deer." This was in the copyrights up to mid 1970s. I will have to search later also.
I know they used paper labels on the figurines but cannot find anything out about them. Any suggestions as to how to research the company?

I am not as knowledgeable as the experts on this site, so apart from the usual manual online search,the only things I would suggest are
a) using more than one search engine, not just Google; different ones may bring up different results. Also vary the search terms
b) use the academic literature too - there is a lot of interest in twentieth century decorative objects, and someone may have written about these issues, although it is a long shot at best, and you may want to throw your computer out of the window by the time you have finished...
Good luck with your search