Antique Stanley Insulating Company “Unbreakable” one-gallon insulated jug, manufactured in Great Barrington, Massachusetts.

The underside is clearly marked:

STANLEY

INSULATED — UNBREAKABLE

GALLON JUG

Stanley Insulating Co.

Great Barrington, Mass., U.S.A.

Patents Pending

Believed to date from approximately 1915–1921.

The jug includes the large Stanley-stamped aluminum outer lid/cup, cobalt-blue enamel inner stopper, and two nesting metal drinking cups with folding wire handles. The jug retains its original wooden carrying-handle grip.

Condition:

Authentic antique condition with surface oxidation, scratches, dents, discoloration, finish wear, and age-related wear throughout. The blue enamel stopper has enamel loss and an old repair or filler around the center rubber plug. The plug is also very loose. The folding cup handles show rust. The interior and insulating performance have not been tested, and the jug is being sold as a collectible display piece rather than guaranteed for beverage use.

Please review all photographs carefully for condition, completeness, markings, and included components. Only the pictured items are included.