Cosina 70 - 210mm f4.5-5.6 zoom lens . Stops down to f22. Supplied with caps, uses 52mm filters . Pentax manual focus PK mount and in full working order . I`ve tested the lens on a Pentax K100D DSLR and it can be used with the usual compatibility caveats you get with all PK mount lenses on the digital SLRs . No optical scratches or fungus , just the usual minor dust etc , perfectly usable vintage lens , £16 delivered to your door in the UK and nice and cheap with free post .... and great fun to use and experiment with. Free UK P&P ( costing me £5 ) 812