It would have been quite easy for them to have added to the description that this will not fit the model 23 Genie II that I have, and probably others. Lehman's really should add this, the base does not have a smooth circle to sit on.

Heavier construction that I anticipated based on photo. Supports the lamp nicely. My old model B Aladdin has an antique bronze finish, and so I took a torch to the bright polished and lacquered mount to burn off the lacquer and give it a darker, patina-like finish. It's attractive and does the job. I recommend it. A wall mounted lamp frees up more room on your night stand, counter top etc. and looks wonderful.