WW1 Imperial German Soldier's M15 Mess Tin (Short-Lived Variant)

A nice service used (been there) example of the short-lived tin lined steel M15 mess tin, prior to 1915 German mess tins were made of aluminium a costly material in the early 20th century so a tin lined steel variant was introduced, by early 1917 mess tins were being manufactured with an enamelled finish so to avoid rust issues.
Both components to this mess tin (Kochgeschirr) are dated 15 (1915) but do bear different makers names, most definitely a wartime marriage and commonly encountered, both dates are lightly stamped but present, the main 'pot' has the typical four 'soup' measure marks, these are concealed behind the lid handle when locked down.
Makers name to lid 'Wurtt metal Fabrik 15', main pot stamped 'SF & St 15'.
No perforations, please study images in regards to condition.

Code: 51222