Lisa's Porcelain Dolls, Traverse City, Michigan Ball Jointed Doll (BJD) Making Supplies
SD or Super Dollfie. This brand is actually a Volks brand of doll, and refers to the line of dolls which are 55 cm tall (almost 22 in.). Originally they were 57 cm (about 22.5 in.). Sometimes this size is referred to as SD10.
SD13 or Super Dollfie 13 are another Volks brand and have mature bodies. The girls are 57 cm (about 22.5 in.) and the boys 60 cm (about 23.5 in.) tall.
MSD stands for Mini Super Dollfie, and these immature, more child-like bodies stand about 42 cm (16.5 in.) tall.
Yo-SD come from the Japanese word for “infant,” and are even younger looking than MSD dolls. They stand 26.5 cm (10.5 in.) in height.