These are open editions; no numbers. They have "GN" product numbers.

The target market? The same people who might have bought a Lefton lighthouse when it was available - locals, tourists, people decorating with a nautical theme. (My guess only.)

See Lighthouse Depot for versions that they make up as table lamps:

http://www.lhdepot.com/category.cfm?CFTREEITEMKEY=77