I've a existantial question about 200 ltr german fuel drum

I've got a "UUU" manufacturer drum and each side have the same markings (see the picture).

But a friend collector I know has got a "Mauser" manufacturer drum and the markings are only on one side.
So witch manufacturer make each side with markings and witch make only one ( if it's depends of the manufacturer...)

Thanks for your help

Regards from France
Stephane
http://sdkfz7.free.fr/