One-Pound Crystalvac Jar, Three Rivers Mold 601-7

The square base of a clear one-pound Crystalvac jar, photographed against a striped carpet to pick up the embossing. The characteristic stack of marks is all here — “3 RIVERS G” across the top, the cursive “Crystalvac” script, “CONTAINER”, “REG. U.S. PAT. OFF.”, and the mold number “601-7” at the bottom. The 601-7 mold is a sibling of the 601-1 we already have from earlier in 2017 (see the 601-1 quart jar) — together they fill in two points of the 601-series Three Rivers run that produced Crystalvac blanks for H and H.

1 pound, clear Crystalvac jar from Three Rivers with a 601-7 patent no.

Instagram 2017-09-26: 1pound Crystalvac Jar from Three Rivers with a 601-7 patent no.