This is a French Haviland & Co Limoges open mayonnaise sauce boat with an attached under plate, or fast stand. The date is circa 1893 to 1930.
The pattern is known as Silver Anniversary, which is a white glaze with a gold trim that is applied at the factory. It is Schleiger number 19, a gold trim on blank 3.
The mayonnaise is in the boule shape.
The mayonnaise is 2 ½" high and 6" wide at the bottom.
There are no chips, nicks or cracks. There is a hole drilled into the bottom at the factory.
The green underglaze mark is Haviland France.
The red overglaze factory decorating mark is Haviland & Co Limoges.