Sigma 105mm F2.8 EX MACRO Lens for Canon EF - For Parts or Repair

Sigma 105mm F2.8 macro lens (older model).

I purchased this lens on an auction site, advertised as fully functional. However, it exhibits the common issue with older Canon-mount Sigma lenses, where an error occurs when stopping down past f/2.8.

Since this lens is sharp wide open, I used it at f/2.8, in AV mode with safety shift turned off.
The bokeh is also natural, making it suitable for telephoto portraits.

AF and MF functions work.
No haze.
There is a lot of dust inside the lens, but it doesn't affect image quality when shooting wide open (see photos).

For reference, photos 9-15 were taken with this lens.

Being an older item, there may be scratches or other issues not visible in the photos.
Please understand that this item is sold as-is, with no returns or refunds.

Thank you for your understanding.