I agree with Glenn and Douglas, if I can help attach the images of some mod. 1910 mess kits of my collection.
1-Mod. 1910 WW1 "Ersatz", 1917 dated-enameled iron
2-Mod. 1910 Reichswehr period-aluminum made, produced until 1940 for Army and Political organization
3-Mod. 1910 Aluminium specific production for Political organization, marked RZM.