It is clear that the TV lamps marked Norfleet and Royal Fleet were produced by the same company, as they are identical in every way. I'm inclined to say that the name Norfleet (either a company name or a line of products) was changed to Royal Fleet at some point. The word Royal was popular when naming a pottery company or line, as it was felt to add a certain panache to the company image.

	value:  rarity: These pigeons or pea fowl make up the only TV lamp I can think of that has the Norfleet marking. It is more often found marked Royal Fleet.
	Back view of the Norfleet birdies.
	The Norfleet marking is on the back, below the light fixture. It reads, © Norfleet Calif.