This porcelain signal is very crude. It measures approx. 3 3/8" Diam. X 3 3/4" high. It has a mottled grayish brown glaze and feels heavier and larger than other signals I own. It has a metallic sheen to it. The outer skirt base rest is rounded smooth but filed on the outer edges at an angle. The pinhole is unglazed and has globs of porcelain in the top of the pinhole. Sounds like a New Lexington but I am guessing its a Trenton. I am looking for an expert's opinion.