I have a quite early Nikkor 28mm PC lens, serial# 174381 making it the 341st made or one of the first 5% according to this website... http://www.photosynthesis.co.nz/nikon/serialno.html#28

glass is totally clean, the lens overall I would call very good with some surface wear, smooth focusing and a very slight play somewhere I guess where the lens shifts and rotates. not sure about the asking price of course so if anyone would like to weigh in that would be great. offers welcome also of course.