Pyrex 323 Clear Mixing Bowl, a rare early production piece of American kitchenware. This 1.5-quart bowl features the "TM Reg" backstamp, identifying it as a pre-1950s manufacture. Its 8-inch diameter and deep-walled glass construction make it an essential tool for mixing, prepping, or serving. This is a must-have for collectors seeking the durability and history of early borosilicate Pyrex. Brand: Pyrex Model Number: #323 Era: Pre-1950s (Identified by TM Reg stamp) Capacity: 1.5 Quart Size: 8 Inches Material: Clear Glass / Ovenware Condition: This item is in good pre-owned condition. It has been gently used and shows minor surface scratching consistent with light kitchen use. The glass remains clear with no chips or cracks.