Oh! I just had another idea. It looks like you could get a good, straight-on shot of the text from the inside of the lid. With the picture, you...
Try searching "standard glaze" art pottery. You might be able to find it.
Maybe a clue as to original use from this picture... [ATTACH]Antique 19th C. Korean Horsehair Scholars Hat with Wooden Box (Dead link from this...
There are two shakers on Replacements, but you have to scroll through a big, long page of "no image available" to find them both. The grey one is...
I'd forgotten Ohio River Pottery had changed their web site name. Still a good resource and write up there. They have the pic of the Alara plate...
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