You are watching a vintage Shimano CS-7700 Dura-ace 

Casette with the original box.

New old stock as you can see on the picture.

12-23T 9 speed

Highly recommended for vintage bike owners. 

100% authentic guaranteed.

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(I am doing eBay business since 2011. I have no reason to sell fake bikes.

Please do not send me messages about autenticity!)