would agree - this 'Siamese' invention goes back a long way, and probably owes a lot to the original gimmel flask design, but would also agree this one looks modern - that folded foot looks very third quarter C20 Gulf of Venice - although the piece itself may well not be - see John's thoughts.
There's no comment on the degree of wear - you'd expect plenty if this was a C19 piece, even though there's very limited contact between the folded foot and work surfaces - especially as the implied design is for an item that suggests a utility use - but may in fact have been made from the point of view of decoration only.