Have not had luck identifying this with any level of certainty. Dimensions are 10" x 5.75" x 9". I will post a picture of the inside next; this one is the profile. No markings other than a blue jean seam on the inside of the lower section. There may be a "T" carved in the middle of the blue jean seam or it may just be a flaw in the porcelain/glaze. Initial guess was an M-2752 but it doesn't seem quite right. Any help will be appreciated.