Correctar is a lens with flat field of view, perfect geometrical aberrations correction, very good chromatic aberration correction. It covers full 35mm frame (24x36mm) easily (reference book says about 12x18cm frame coverage that seems to be true since it covers about half of A4 size paper.
This lens was included into delivery set of Russian microfilm stations. Good news is very long FFD (about 80mm), so it can be easily adapted to most old and modern systems, including reflex ones. The lens is perfect for low-power magnifications and reproductions. It offers 3x native magnification with 330 lpmm resolution in the center (150 lpmm on the edge).
Appearance is excellent. Only minor signs of use.
Mechanical condition is excellent. Aperture moves smoothly.
Optical condition is excellent. No fungus, no scratches, no cleaning marks. The lens is unused, most probably. Comes in the original plastic container.