From Harmony House Fine China, Japan here is a gravy boat with attached unplate in the Mary pattern. The pattern number is 3835.
The gravy boat is used and in good condition with no chips, dents, or cracks on it. It is white with silver/platinum trim. The underplate measures 9 1/2 inches long by 6 1/4 inches wide. The gravy boat is 8 1/4 inches long by 5 inches wide. It holds 1 3/4 cups.