Nikon pre AI lenses - spare parts.

Hello,
I have several nice pre AI Nikon lenses,
( a 55mm micro, a 24mm f2.8 and a 200mm f4) which I would like to be able to use on my D700. To do this I need to either machine the aperture ring
( spoiling their collector value), or obtain new AI aperture rings. Is it possible to get spares for these elderly but still good lenses?
John.

At the time, Nikon offered upgrading to AI and no doubt thousands of lenses were converted.

I wouldn't try a DIY conversion. My suggestion would be to either sell the lenses on eBay or somewhere else or to contact Nikon to see if a conversion is still offered.

If you do a DIY conversion I'm sure the value will be wiped out and possibly the lenses ruined if it goes wrong.

Hope that helps.

Best regards

John