Nikkor 300mm f/4.5 H non-AI (non-AI 1969-'77, AI '77-81, AI-S '81-94)
This sample circa '69.
Filter size: 72mm
Close focus: 13 feet/4 meters
Aperture range: f/4.5 - f/32
Aperture blades: 6
Depth of field scale for f/11, f/22, IR index.
Design: 6 elements in 5 groups
Comments: Note there is an earlier 5-element version which looks the same, just with a P instead of an H. I was pleasantly surprised by this lens - it seems like a pretty solid performer, at least for black and white use. The lens is pretty big and hefty, and my sample is rather beat-up externally.
Here are the two 300mm lenses side by side:
More photos from this lens