Old Nikkor S 1.4. 50mm lens circa 1958.

They are definitely coated - I am almost certain they were single-coated. Very hard, resilient coating - resisted scratching very well.
 
Single coating, which means all the surfaces have a single coat. Nikon coatings were among the finest in the 1950s. The coatings hold up very well despite their age and contribute to the lens's sharpness.
 
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