That's an American Gas Machine (AGM). Check here The Terrence Marsh Lantern Gallery to find the model. Good lanterns but the brass fount models are prone to stress cracks which renders them ornamental rather than functional. Ask before you buy if the fount is brass or steel. Most brass fount AGMs are cracked.
Thank you! Already on it's way in the mail. Stress cracks or not Bought a Optimus 930 and the seller told me he had one more, just the same. I understand his tought, but even I can see that's no 930. Given your link I would say AGM 3016. Thanks again