Nippon Kogaku Japan Nikkor-P Auto 1: 2.5 f = 105mm. Reader Review Radozhiva | Happy
The Vintage Lens That Turned Me to Manual: Nikkor 105mm f2.5 Ai (A Non-Technical Review) — Russell Bloodworth Photography: Northwest Arkansas Professional Photographer
Comparison : Nikon Nikkor 105mm f/2.5 vs f/1.8 - YouTube