It is ancient. The part number isn't bringing much up for me. It appears to be a T18. Large turbocharger. Used on a multitude of things. Mostly big displacement Detroit and Cat stuff. The gas crowd used to love them for big power on their cars.
I pulled them off two diesel generators, while installing new ones at a sewage plant. They were scraping the generators so I pulled the turbos. Seeing there so old I assume there of no value to anyone?