How much is this plate worth Edwin m Knowles 23-1-6?

The value of an Edwin M. Knowles plate, such as the one marked "23-1-6," can vary based on factors like condition, rarity, and demand. Generally, these plates can range from $10 to $100, but specific values may fluctuate based on current market trends or collector interest. To get an accurate appraisal, it's best to consult a collector's guide or an antique appraiser.