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Rarity can be related to a machine which, unusually for that model, is still working. Or a collector’s item may include the original box, a scarce program module or some other component or characteristic which increases it’s rarity value. Chess computers restricted to release in just one country may appear from elsewhere to be very rare. In this and many other cases time will tell how many there really are.
I make no claim of exceptional rarity for any of these chess computers. In most cases I just don’t know how many survivors there are. The approach I take to this issue is this. If a chess computer is found only in a limited number of known collections, and appears very infrequently on the internet, including Ebay, it qualifies as rare for the purposes of this feature. Other chess computers, seen a little more often, have been included if they are of particular interest, at least to me.
Hopefully this feature will include some models, photographs or information you have not seen before. Or at the very least, for the hard core collectors, a pleasant browse through the reasonably rare and not so rare.
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