Bundeswehr or WW2?? VTG German steel helmet 1940s  West Germany w .camouflage cover

I don't know if it was used in WW2 or after that by the German Bundeswehr.
Strange to be a German helmet but presents ownership rubric "Seith" and USA written by hand in white

Condition: Signs of oxidation and use, camouflage cover with signs of use and small tear on the front as shown in the images

The entire helmet is made of steel and weighs 1400 grams

Dimensions:
Height: 16cm - 6.3"
Length: 29cm - 11.42"
Width: 22cm - 8.66"
Inner circumference: 76cm - 29.92"
Weight: 1400 grams - 3.10 lbs

Fantastic collectable militaria item for your collection