A round Leather Case Flask by Drew & Sons.
The glass flask has a silver plated, cork lined screw on cap with a serrated edge to give a firmer grip. The flask is a snug fit to the case, which is fitted with a belt strap over the case top to secure it. With the top removed, the Drew & Sons stamp can be seen to the front of the case. This is a fairly typical position for Drew to mark their cases. The flask takes a little under a pint. A good sized flask by a good maker. Circa 1900.
Case Size is Given