Len Castle/ Theo Schoon, a collaborative piece designed in the mid-1950s, Len Castle made this form infrequently over the years. This piece was made in the mid-1990s in colonial shino. Len Castle has retained Schoon's stamp which he used on this piece to denote the collaboration, circa 1996, LC mark and Theo Schoon mark. Reference: Len Castle Potter, Ron sang, 2002, page 177.