I dont think its a sidelock.... ESPECIALLY at that price. I was told by the president of Dickinson just a few months ago that the sidelocks were only available in 12 and 20.... plus the Dickinson sidelocks Ive seen were going for around $4K.

Like this...
http://www.gunsinternational.com/Dickinson-Prestige-SL1228-SXS-12-GA-.cfm?gun_id=100514438


I believe the gun in question is the sideplated model.... the "expert" in the video is mistaken. Still a nice piece. Love the wood. And he guessed at the weight. Most of the 28ga boxlock Dickinsons weigh in around 5 1/4 lbs to 5 1/2 lbs.... the sideplated version should only be a few ounce more.... which is about perfect in my opinion... light but still shootable.

Adam