Hi Mark, Thank you for contacting Mearto with your appraisal inquiry. 1645 is the pattern or model number it's not the date. Based on the photos and information provided, and subject to examination, this is: A vintage Colonial Revival style pewter teapot made by L. or J. Vickers, English, late 19th/early 20th Century Of bold baluster form with single serpentine handle, hinged cover and wheel-turned circular foot. Marked to the bottom "L 5 / L. (or J) VICKERS / 1645 9 inches tall, 11 inches long CONDITION: appears to be in good condition with minor wear from age PROVENANCE: inherited $30-50* *represents a fair-market value for auction purposes; retail or asking price may vary. Please let us know if you have additional items to appraise, and thank you again for using Mearto.