Dear Jinzhe Li,
Thank you again for your appraisal request.
The object in question is a nice Louis Vouitton Attaché Briefcase in good condition with only light traces of wear. It comes with the original box and a dust bag.
At an auction this case could fetch between 1.800 and 2.200 USD.

If you have any further questions do not hesitate to ask again.

Best wishes,
Viktor