Pair of Ball Glass Jars with Zinc Ball Lids. These are marked Ball Perfect Mason on the front of the jars. One of them measures 7 1/4" high by 3 3/4" wide at the bottom. The other is 7" high by 3 3/4" wide at the bottom. One of the lids is has 1973 / 910 inscribed on the top of the zinc lid. They are pre-owned but in good condition.