AI Appraisal Estimate

The item is a vintage Soligor 135mm f/2.8 Tele-Auto MC camera lens. It appears to be constructed primarily of metal, finished in a matte black color, with glass optical elements. The front element is visible and reflects light, indicating its optical nature. Engraved markings on the front rim of the lens clearly indicate its specifications: 'f=135mm' denoting its focal length, '55Φ' likely referring to the filter thread diameter, and 'No. 2791' which is presumably a serial number. The manufacturer's name 'SOLIGOR' is prominently displayed in white lettering, with 'MC' (Multi-Coated) in green, suggesting a multi-coating on the lens elements to reduce flare and improve contrast. 'TELE-AUTO' is also visible, indicating it's a telephoto lens with some form of automatic functionality (though the specific mount type is not discernible from this angle). The lens shows signs of being a used item; while no severe damage like cracks or deep scratches are immediately visible on the front element or body, minor scuffs or dust might be present on closer inspection. The overall condition appears to be good for a vintage optical device, suggesting it has been reasonably well-maintained. Its black finish and functional markings are typical of camera lenses from the mid to late 20th century. The quality and craftsmanship are consistent with consumer-grade lenses from that era, known for offering good performance for their price point.

Based on my visual examination of the provided image, I've assessed this Soligor 135mm f/2.8 Tele-Auto MC camera lens. Authenticity is confirmed by the clear 'SOLIGOR' branding and engraved specifications, which are consistent with known examples of this lens model. The 'MC' designation for Multi-Coated, along with 'TELE-AUTO,' further aligns with Soligor's product lines from the mid to late 20th century. The condition appears good for a vintage optical device; while minor scuffs or dust could be present, there are no visible signs of severe damage like cracks or deep scratches on the front element or body. This suggests reasonable maintenance over its lifetime. From a market perspective, vintage third-party 135mm f/2.8 lenses, especially those without a highly sought-after mount (which cannot be determined from this angle), generally command modest prices. Comparables such as Vivitar, Tamron, or other Soligor 135mm f/2.8 lenses typically sell in the $20-$60 range, depending heavily on the mount and optical condition. The 'MC' coating is a positive factor, potentially offering better contrast and flare resistance than earlier non-coated versions, which might slightly enhance its appeal. However, 135mm f/2.8 lenses are relatively common, limiting rarity and driving demand for this particular model to a niche market of collectors or users adapting them to modern digital cameras. Factors impacting value include its good apparent cosmetic condition. However, unknown internal optical conditions (haze, fungus, dust), diaphragm functionality, and focus helical smoothness are significant unknowns. The specific lens mount is also a crucial determinant of value; certain mounts (e.g., M42, Nikon F) are more desirable than others. Without a physical inspection to verify internal optics, diaphragm operation, and ascertain the lens mount, the valuation remains largely based on external appearance and market trends for common vintage third-party telephoto lenses. Full authentication would require in-person examination to verify all mechanical and optical functions, and potentially a closer look at the serial number for dating.