Other than the marking on the bottom, unsure what the difference is between this one and those produced in 1997. One mold line in glass under oil font which looks to have been created during production. Wick raiser knob turns easily and fill cap unscrews easily. The lamp is 9.75 inches tall to top of burner collar and has a base diameter of 7.75 inches.
The item "PROTOTYPE AUCTION 2001 Aladdin Oil Model 23 Burmese Fenton Grand Vertique Lamp" is in sale since Wednesday, April 29, 2020. This item is in the category "Collectibles\Lamps, Lighting\Lamps\ Non-Electric\Kerosene". The seller is "dcorbis6x85" and is located in Cincinnati, Ohio. This item can be shipped to United States.