PORST SUPER-WW MC AUTO H 1:2.8 28mm. This is not a Pentax K mount. It can be used with digital cameras via a mount adapter, and focusing is manual. Includes front and rear caps and a filter. The lens barrel, front element, and rear element show no major scratches visible to the naked eye. The aperture and focus rings rotate with appropriate torque. Please refrain from purchasing if you are overly concerned about condition. This is an old item and is sold as-is. In the event of any oversight or issues after arrival, the buyer is responsible for handling them. We cannot cover repair costs or accept returns, so please purchase only if you agree to these terms. Thank you. SN: 390528 45000→41000→35000→31000→29000→27000→23000→21000→19000→17000→15000→13000→11000→9900 Other features... With front lens cap, with rear lens cap, old lens