Just like mine but in fantastic condition. Mine looks like it's been in a war.
One of the things I like about the lens is the manual focus which is top notch, and can be controlled with your pinky finger. My preferred use is with the F 1.7x AF adapter on APS-c of the Tamron W& 2x on FF.
With the F-1.7x AF Adapter on the K-3
With the F1.7x AF adapter you have 510 ƒ4.5.
With the Tamron WC7 2x you have 600 ƒ5.6 (I use this combo on K-1 only)
The easiest and cheapest way to get into plus 500 mm at less than ƒ6.3.