1 litre Food flask (Weston)

Metal case and glass inner food flask, has detachable handle, cork and metal stopper and metal lid which can be used as a dish, also comes with spare replacement glass inner. There is a dent in casing and don't know how airtight the cork stopper is (it is very old). I haven't used it for any hot food so not sure how long it will keep food hot. It is brilliant for storing frozen sausages if you are camping!!