Agreed that the Nikon 18/4 is aesthetically one of the best looking Nikkors ever made, and is still a useful lens today. I
recently had the Nikon 18/4 and the Zeiss ZF2 18/3.5 at the same time, and felt, for budgetary reasons, that I should only keep one of them.
Interestingly, while the 30-year-newer design Zeiss was contrastier and had greater color saturation, the actual resolution(at f/4) at the edges of the 24x36 frame...in my test... was about equal.
I chose to keep the Zeiss because it had a fairly efficient lens shade, while the Nikon has a hood that functions only as a retainer for series 9 filters.