I can't find any info on such lens in my reference books, and this is quite strange - the objectives were made in 1970 is serial number is correct. So, lets suppose that it belongs to the series of mirror-lens UV objectives. Main difference from the series is that it is APOchromat, not achromat.
Cover glass thickness
33mm (RMS) ?
Transmitted, bright field
Here are two links to pictures took with such UV lenses by one of our customers from Germany: