These are unusual, they do not have the ribbed pattern seen on most forest green glass from Owens glass in Illinois. These are probably from the 50's.
They are all signed 16oz, Duraglass with the Owens Illinois makers mark. They are also an unusual size. They stand 6 3/4" tall, 2 1/2" square, with black, metal screw on lids. The lids have just a little rust, easily cleaned off, no chips or cracks, excellent condition!
They will look great next to your larger glass canisters and green glass shakers!! They will go perfectly with your forest green charm dishes, too!!