Meyer Telemegor 300mm F4.5:

A great lens at a great price. Meyer lenses were produced in the former East German Pentacon factory, and is renowned for their great optics and build quality. No plastic here, but heavy metal all round! This lens is surprisingly sharp wide open, and tack sharp from F5.6 upwards.

They are becoming very rare now, with resultant higher prices. 

Sample Photos:

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