Rarity Rating
			The rarity rating is based on a scale of 1 to 5, and appears in the title bar of camera pages in the following format:
			The rating is a guide to the availability of a particular camera, and is based as follows:
			Cameras rated '1' are easy to find. They appear regularly at camera fairs, car boot sales, flea markets etc. A typical example of this rating is the FED 5 series, large numbers of which appear regularly on the e-bay auction pages
			'   2' rated cameras are slightly more difficult to find. They can generally be found at camera fairs, through dealers or internet auctions. An example of this rating is the Zorki 1.
			These cameras may require some searching out. They were generally produced in smaller numbers than previous categories, and this is often reflected in the price. An example is the Canon 7.
			Cameras with this rating are usually in short supply. Generally, '4' rated cameras were only produced in small numbers. They rarely appear at camera fairs and turn up, from time to time, at specialist dealers or auctions (including Internet auctions). An example of this rating is the FED C (S), of which less than 2000 were probably manufactured.
			'   5' rated cameras are rare. They are found in important collections, museums etc. They are rarely offered for sale, and then often by auction. An example of this rating is the FED B (V). It is reputed that only 40 of this model were made.
			Note:  If a camera cannot be assigned one of the above ratings, by virtue of extreme rarity, it will be marked NA, for not available. A camera falling into this category will exist in small numbers (probably single figures), and the whereabouts of all surviving copies will be known. The Da Lai Leica copy from China is such a camera. Total production was 12, of which only one is known to exist (this is held by the Beijing Camera Factory).