Lens production year

[Loekito]

Is there any clue to know when is the production year for a lens?
Is it stated somewhere? in the box? in the lens body? in the lens serial number?

thanks,

Loekito

[kfong]

The lens production year is described in
http://photonotes.org/articles/beginner-faq/cameras.html#naming
under the heading "How old is my camera or lens?"

Ken

[Loekito]

Thanks Ken, will check the url soon :)

regards,

Loekito