In article <4g8us1$dhq@newsbf02.news.aol.com>, ja5on5@aol.com says...

>i recently purchased a NIKON 80-200f/2.8 and was wondering where the
>serial # could be found. this is necessary for warranty purposes.
>please email me i you can help.
>thank you in advance!

Look on the easily removed-and-exchanged aperture ring - would you
believe it?!
Hope This Helps