This is a Used Tokina 12-24mm DX AT-X Pro F4 Auto Focus Lens (77mm filter size). 
Serial number xxxxx84.

Condition:
Excellent condition with very little wear. Glass is excellent.

What is included in this listing: 
Lens, lens caps, and hood.

NOTE:
Will only manually focus on the D40, D60, D3000, and D5000 series cameras.

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Thanks for looking!

~Jewel