Clear Crystalvac Quart Jar, Mold 601-1

eBay order evidence: An archived checkout capture backs the order line (the in-app listing thumbnail did not load in that capture). Accession HH-PACKAGING-2017-0002.

A clear quart-size Crystalvac jar from Three Rivers Glass Co., photographed from the base to show off the embossed markings. “3 Rivers G” arcs across the top with the flowing “Crystalvac” script underneath, followed by “CONTAINER”, the “REG. U.S. PAT. OFF.” line, and the mold number “601-1” at the bottom. The 601-series molds were the workhorse Crystalvac blanks, and clear examples like this one turn up less often than the amber tint the plant is better known for.

Instagram 2017-03-02: A Three Rivers Clear Crystalvac Quart jar from mold 601-1.