The Chambers model B was made between 1939 and 1946.The “15” in 15B refers to the backsplash type. This Silverlite backsplash, with two lights on either side, two shelves and a timer in the center was a popular option back in the day and remains popular for its classic styling.

You can learn more about the model B and what makes it so special in my model B walkthrough video.