Nice lens in box and case with hood and caps.

AF working fine, Glass clean but aperture stiff

Added 31/04/24

I bought this lens with fungus on the inner elements, in the end I had to strip all the optics and remove the aperture etc, I cleaned and reassembled it, and it seems to me that the aperture prong on the mount is fouling on the aperture dog on the aperture mechanism inside the lens, the Aperture works correctly when the mount is removed, But when you put the mount back on it becomes sluggish, if you play around with tightening the mount screws at different amounts you can get it to work but not at all zoom positions all the time, The screws were not all fully tight when I started disassembly but not sure if that was a problem then, or it is something I have done as I do not remember checking aperture just AF as that is the usual problem, I Think someone had already been inside as the sealant was not intact on some screws. I have tried tweaking the prong but if you move it easily fouls on a ridge on the lens tube or comes off the dog or presses too hard on the side of the dog and stops the aperture from moving easily,

Have taken images today on K70 31/03/24

1st landscape at f8 16mm last at f8 50mm, Sheep 50mm f2.8, Daffodil and blue flower at f2.8 50mm, primrose f4 50mm, shed at 50 and 16mm f5, These were taken in manual mode to compensate for slow aperture around 1 stop+