WW2 German medics chest

[barriefield-brian]

Came across this at a garage sale last summer and am getting around to doing something with it. From what I have been able to find its a medical chest, very heavy so must have been in a vehicle? Assume the field gray is the original paint so would be looking at some way of removing the black overcoat. Dont know what the RG 1941 stands for, just noticed the small stamping of the eagle and swastika as I was taking the pics. Anyone with any info on this is appreciated. Cheers Brian