Posted 3 years ago
Part of my Czech glass collecting and identification approach is to examine carefully the colors used. By the time these glass pieces were made during 1920s-30s, glass houses no longer mixed their own color formulas, they were able to choose and purchase colored glass rods from a company called Riedel, who specialized in making rods in a huge range of colors, some have said about 500.
To me this means there may have been a dozen yellows, reds, oranges, greens, blues or more. For decorative glass production, I believe buying a large supply of each shade and hue was required and practical. This has served me well as I have found multiple glass pieces with the exact same colors used together. Perhaps not applied in exactly the same way, but that would the master glass craftsman choice, not the producer's.
I mention this as the 5 ring glass jar seen here from my collection, and acquired a few years ago from Germany, does not have a combination of spatter colors that is familiar. The white glass is a different mix of spatter. I compare it with a Kralik hyacinth vase of mine in yellow, reds and oranges spatter glass, a Kralik piece that was produced in many other decors and marked. You can see they don't match.
The fact that these pieces are Czech and of a definite period is the most important as a collector. That was the nature of exports then. The high value quality glass was signed, known, documented and still identifiable to this day. The mid-market glass items on the other hand were not consistently known or identified. Collectors of all types of export decorative items from that period are happy with a place and a date, even that information can be a challenge.