Olympus M42 E.Zuiko Auto-T 3.5/135mm + tas | Prime lens

I am selling the very extensive photography collection of my late father. He was a passionate hobby photographer for 65 years and in recent years also experimented with alternative lenses on digital cameras. He would disassemble the lenses if necessary for cleaning or repair. I am not a photography expert myself, so I describe the lot as thoroughly as possible, including as many detailed photos as possible.
READ the information below and carefully examine the attached photos to avoid any misunderstandings.

This concerns:
Made with info from the internet.

This lot is a remarkable find for the serious collector: an Olympus Zuiko 135 mm f/3.5 in original M42 screw thread. Not an OM variant with an adapter, but the original, very rare M42 version — a literal piece of Olympus history from the transitional period before the OM system.
The lens feels solid and handcrafted: a compact telephoto with that typical Zuiko finish — metal, precise mechanics, and an optical character that you won't often find in modern lenses. Optically, it delivers a natural color reproduction, pleasant contrast, and a soft, calm bokeh that presents portraits and detailed subjects in a distinctive, classic way. Because M42 versions of Zuiko telephoto lenses were rarely produced, this model immediately becomes interesting for collectors and users who want to use vintage Zuiko optics on modern bodies via an adapter.

Specifications
Manufacturer: Olympus (Zuiko)
Model: Zuiko 135 mm f/3.5 (M42 mount)
Mount: M42 screw thread (no OM, no adapter)
Focal length: 135 mm
Maximum aperture: f/3.5
Coating: (usually single coat — mention if visible)
Design: metal tube, manual focus, manual aperture
Series / serial number: 109606
Lens condition not really clean, see all detail photos. What it could be seems to be scratches and dust.

Diaphragm: works smoothly, all blades close properly.
Sharpness: flexible
Mount: original M42 thread in good condition, no bent threads.
Cosmetics: light signs of use on the tube (wear appropriate for age).
Accessories: (list what you are including — e.g., lens caps, case, box if available).
A retractable lens hood is included.

Rarity: M42 versions of Olympus Zuiko telephoto lenses are extremely scarce — this is not a standard OM lens with an adapter but an authentic M42 version. This makes it particularly attractive to collectors.
Ease of use: M42 is universally adaptable to modern mirrorless bodies (Sony E, Canon R, Nikon Z, etc.) — practically usable and collectible.
Image character: natural colors, pleasant contrast, and a soft, calm bokeh — ideal for classic portraits and vintage look photography.

Lens also comes in the original artificial leather bag, so that completes the unique lot.

Combined shipping of lots is possible, but only if they are won in the same auction. This is to save on shipping costs!