Vintage Military WWII ? Jerry Fuel Can Treibstoff Feuergefährlich 20L Metal #3

For 1 x Jerry can. Metal
Stamped as shown photos. 
Can't see the date of year stamp.
Still little bit of liquid inside.
Lightly stiff but working lid/cap
Approx 46.5cm x 34cm x 16cm
4.5kg
Paint loss and rusted overall,  especially bottom and around
Some large and small dents here and there.