Reply #26: If you do get the piece checked out, hope you post about it :-)

[Whoa_Nelly]

As I said, I am only going by what I found in my US Pottery book. I am by no means an expert, but I have been learning about pottery and ceramic pieces for many years. In fact, when I first saw your piece, I thought it may have been 1925-30s Japan, Art Deco. But, it also had the appearance of an end of the Art Noveau period look to it as well.

Once you posted what the mark looked like (rectangle with a number), I knew it couldn't be from Japan, as any rectangle marks on Japanese ceramics usually have a Japanese character or English letter.

The book I used to look up your mark is:
http://www.amazon.com/Lehners-Encyclopedia-Marks-Pottery-Porcelain/dp/0891453652/ref=pd_bbs_sr_1/002-5657995-7783230?ie=UTF8&s=books&qid=1192979540&sr=1-1

Lehner's Encyclopedia of U.S. Marks on Pottery, Porcelain and Clay by Lois Lehner

Lois Lehner has been THE authority on US pottery marks for many years. She recently had been ill, and died a week ago this past Saturday. Prior to her death, she gave Ralph and Terry Kovel her unfinished research so that what her findings and work could continue.