Vintage dura ace 6 speed freewheel.  It spins very nicely.  The cog teeth look very good.  I didn't notice any chipping, etc.

Please ask questions before bidding.  Thank you!!

This is non-hyperglide and not cassette.  Threaded freewheel 13/21 - 6 speeds.

Teeth counts:  13,14,15,17,19,21