The Hartford 28 process, used to produce these glasses, was developed to manufacture simple light weight tumblers. The glasses in the Sierra range are of a simple cylindrical form with very heavy base.
The Sydney glass maker Crown Crystal Glass (from 1972 to 1988 Crown Corning) based at Waterloo was the largest and most successful manufacturer of Australian domestic glassware in the last half of the 20th Century. Many of the company's award-winning products can still be found in many Australian households and a successful export drive sent Australian glass to many countries including the USA, UK, Netherlands, Germany, and even Scandinavia - itself a major exporter
~ Crown Corning OMNI Bubble Base Glass Ice Tea Tumbler 5" Vtg Denise Larcombe RARE ~ In Great condition.With Original Tag.Nice, clean and shiny.No chips, cracks or fleabites. Holds:8 ounces Measures Approx.:5 1/8" tall2 5/8" opening ~ Please see all photos for details as they are part of the description, use Zoom and ask questions before bidding ~ Returns as per eBay Policy, " If a buyer needs to return an item, it must