Barolac
"Barolac glass was produced in CzechoSlovakia at the Inwald glassworks during the 1930's for export to England. The name "Barolac" and the crossed J's trademark were registered in the UK and together with most of the designs were contributed by Douglas Jenkins, son of John Jenkins, glass importers in England.
Barolac glass comes in different colours, the most striking of which is their opalescent glass. The second most common is clear and frosted glass, but there are blue-green and custard versions.
It is often confused with French art glass of the same period (1920's and 30's) since it was often unmarked. Pieces that are marked have the word Barolac either moulded into the glass or etched. The vase above left has "Barolac" in script moulded onto the base, and the words "Made in Czecho Slovakia" etched onto the rim of the base.
Many of the designs and the moulds for Barolac glass belonged to John Jenkins and Sons; but after the war many of them were lost in Czechoslovakia.
One of the earliest designs depicts a naval battle and was inspired by a painting "The Loss of the Revenge" which Douglas Jenkins had seen in London. They are very beautiful and high quality glass, and the Naval Battle vase was followed by other designs with flowers, trees, leaves, fishes and animals. Jenkins was warned to bring his moulds out of Czechoslovakia in the mid-1930's because of the threat of war, but iron moulds are very heavy and not easily transported. So they were left behind."