Mallo-Ware literature indicates that they marketed at least 16 vessel forms, 17 if you count the sugar bowl lid separately. Each piece was stamped on the bottom with a mark indicating which form the piece represents. The sugar bowl lid is merely marked on its interior with the number 41. The links on the following table will take you to photographs of most of the forms. At this time I do not have the stacking mug or the 3 compartment or buffet plate.