Pyrex 231 Clear Baking Dish Pre-1950s TM Reg Vintage 10x6 USA

Pyrex #231 Clear Rectangular Baking Dish, a rare early production piece of American ovenware. This specific dish features the TM Reg backstamp, identifying it as a pre-1950s manufacture. A true piece of culinary history, this heavy-duty glass vessel represents the classic era of Pyrex durability and design. Perfect for collectors of early kitchenware or for display in a vintage-inspired kitchen.  Brand: Pyrex  Model Number: 231  Era: Pre-1950s (identified by TM Reg backstamp)  Dimensions: 10 x 6 x 1.75  Material: Early Clear Borosilicate Glass  Condition: This item is in good pre-owned vintage condition. The glass shows surface scratching and minor imperfections consistent with nearly 80 years of age. There is one larger crack present; however, it does not appear to be deep or structural. Please examine all photos closely to assess the vintage character of this piece.