Just back from vacation, I'm looking for informations about this item. I got it on a flee-market in Austria.
Obviously a Honved item (the seller offered it as "Italian"). The Hungarian inscription translates to "smal tank", and that is what this smal crate (27x20x12 cm) contains. Second picture shows the maker mark on the lid.
The 7M might refer to the liquid to be stored in the tank, but what was it?