This is a vintage item from the early 20th century. It could have been used in a house hold context or by farmers in the paddocks, by hikers, family picnickers, campers or by workers in factories. This item has no known provenance and is kept as an interesting vintage domestic object..Deep blue enamel vacuum flask or thermos with a rusted metal handle and a lid which serves as a cup. There are rust patches on the base, sides and cup. The central section is round.vintage domestic item, vintage vacuum flask, vintage thermos