In article <4hks1n$50b@hpcvsnz.cv.hp.com>, kens@lsid.hp.com says...
>Bob Neuman (d_ruether@hotmail.com) wrote:
>| In article <4hi9i9$h4v@newsbf02.news.aol.com>, bilingham@aol.com says...
>| >I have an old F that I bought in 1968. It still functions perfectly
>| >and looks like new. Lenses: Nikkor 28mm, 55 mm , 55mm micro, 135mm.
>| If the lenses are also mint, I would hesitate to have them AI'd, but
>| if you do, they will fit and work with most Nikon bodies of any age

>I was about to have this done with a couple of my old Nikkor's but now
>I'm wary. My understanding was that the lenses would still work with
>the old body and simply now work with newer camera bodies. Does this
>process somehow degrade/devalue the lens? I guess "devalue" is much of
>a concern to me since I plan on using them another 20 years. I don't
>want the lens to come back with vice marks on the barrel, scratches
>on the glass and metal filings rattling around inside.

Gary Hunt's answer was good on this, to which I would add: the 1968
lenses (especially if marked in CM instead of MM focal-lengths) have
some moderate collector value IF truly mint (if not mint, don't worry).
It may make more sense to sell them (if mint), since some more modern lenses are better, anyway (the 28mm f3.5 AI-AIS, 28mm f2.8 AIS [but not the 28mm f2.8 AF, AI, or non-AI], and the 28mm f2's are considerably better than the 28mm f3.5; the Micro was improved with the f2.8 version, especially near infinity; any f1.8 50mm [or AI-AIS f1.4] is sharper
than the 55mm f1.2; and the compact 135mm f2.8 is excellent [though the older 135's were good, too]). The original poster has a good user set
of lenses now - I am just offering more information.
Hope This Helps