This lot includes a group of 20th-century German Zeiss microscope attachments designed for scientific and optical use. The group features a Zeiss photo microscope attachment, a phase contrast condenser model 4221359, and assorted Zeiss objective lenses in various magnifications. These pieces are suitable for collectors of antique scientific equipment, microscope accessories, optical instruments, or laboratory display items. Zeiss is well known for precision optics, making this group a desirable addition for scientific instrument collectors. Items show wear consistent with age and use. The lenses are dusty. Functionality and completeness were not provided — see photos for exact condition, included components, and lens details.