The burner is marked "The Adams" and has a 1904 US patent and 1906 Great Britain patent. There are a few old repairs. It's possible the burner and fill collars were been replaced a long time ago. Overall normal signs of age and use. The surface has been cleaned. The tank measures about 5-5/8" wide x 3-5/8" on the bottom. About 3-3/4" tall with the burner. The burner is untested and the wick knob is very tight.
This product would be a great fit for antique enthusiasts looking to restore or showcase their vintage lamps.
