Authentic! Purchased in April 2024. Like new condition! Length is 15.75 inches. This is the standard length and has not been adjusted. However, if you would like to adjust it, you can take it to any VCA store and they will adjust the length for free! (This service is $180 if it has been over a year since purchase date) This will be polished before shipped and will come with the box and VCA certificate of authenticity.