The key was made in the early 1950's for the Czech armed forces, and I have to say, though this is as a complete novice, it feels like a very nice key, quite solid with a pleasant action.
A pal of mine, Ken, G3SDW has one, and he highly recommended this key to me, who am I to argue with someone who has been using CW since well...let's just say a long time !
The price of these keys are 20GBP including UK postage, I think that it a real bargain, I can only assume whoever is selling these has bought quite a job lot !
The key on my desk, note the CQ crib sheet !
Close up of the key.
Note the lettering, I think this translates as 'receive' as there is an arrow pointing upwards !