+1 . It's an old Sid with 28mm stanchions, as opposed to the now-standard 32mm and 36mm standard stanchion diameters.

Hope you know that it's an air fork. If you haven't already, you should air it up. If it's first generation SID, then you will need a special adaptor to screw on the end of of your shock pump. It's a Problem Solver's QBP part if you need to order one from an LBS.