Found this lens at a thrift store. Not sure what it is as I've never heard of Sirius before. It says made in Korea. Also not sure what mount this is as
Atlas Lens Co. Sirius Series Anamorphic Prime lenses Announced - Newsshooter
Atlas Lens Co. SIRIUS at NAB 2023
Sirius Macro 28-70mm f/3.5 Lens – Film Camera Store
Atlas Launches the New Sirius 1.0X Anamorphic Cinema Lenses - Y.M.Cinema Magazine
SIRIUS SR-G MC ZOOM MACRO 28-70mm f/3.9-4.8 Lens for PENTAX P/K-A R-P/K | eBay
Canon FD Fit SIRIUS Lens 80-200 Mm F/3.9 MACRO New Like - Etsy
Atlas Lens Co. Sirius Series Anamorphic Prime lenses Announced - Newsshooter
CLARO SİRİUS / BELİZE MAVİSİ - Bi Dünya Lens - Renkli Lens Marketi
Sirius FD fit 80-200mm f4.5-5.6 MC Macro Zoom lens. A lovely piece of – Rewind Cameras
SIRIUS SR-G MC ZOOM MACRO 28-70mm f/3.9-4.8 Lens for PENTAX P/K-A R-P/K | eBay
Atlas Lens Co. Sirius Series Anamorphic Prime lenses Announced - Newsshooter
Seriously? Sirius 1x Atlas Anamorphics - Film and Digital TimesFilm and Digital Times