The numeric mark on the underside appears to me to be 300 and a small mark I can not see, even when enlarged. I would venture it to be a model number or stamping number for the metal. The "parts" of the lighter were most likely produced and assembled by at least 2 different companies, possibly 3 or 4 (metal, glass, lighter manufacturer, and final assembly / branding). The color of the metal on my computer is quite brass looking, but I may have made an assumption about the metal based on what I saw in the image. I thought Bohemian, simply due to the style of the glass work not striking me as necessarily very Italian...