For your consideration: a cobalt blue cube ink bottle. It was blown in medium blue cobalt glass batch into a two-part mold in the 1890's era. This was recovered along the Raritan River in a mill dump in Northern NJ about 15 years ago. It is in good dug condition with no damage. The glass surface shows a rippled surface, as seen in the images. The exterior shows some very light haziness. One bottom corner shows a minor ping, which is stable with no issues. The bottle is stable, structurally solid, and displays great. It measures: 2 1/8" x 2".