Thanks Asher, but it is LOMO, not (Romanian) IOW. Its serial no is 92xxxx, so it is made 1992, and has a rather modern green/magenta multicoating.
Its performance is quite similar to other projection lenses I have, namely the single coated, excellent series of Carl Zeiss Jena Visionar lenses.
Here one which has nearly identical focal length (84mm), but is f1.6
Visionar f1-6 84mm Set