The Society for Old Ivory and Ohme Porcelains (SOIOP) is an organization of collectors and dealers who admire and collect Old Ivory and Ohme Porcelains.

SOIOP, Society for Old Ivory and Ohme Porcelains, Ivory and Ohme Porcelain collectors, Hermann Ohme Porcelains, china collecting, Old Ivory and Hermann Ohme porcelains, clear glaze, Old Ivory porcelains, china pattern collections, blanks, molds, gold grading, fleur-de-lis mark, Clairon mark, filigrees, decals, hand painting, border decorations, china pattern and flowers, SOIOP annual auction and convention