Correct 68 c10 rear view mirro

[socalkevin68]

Hope someon can help..I just bought a rearview mirror off a board member and it got here...I was excited as its off a 68 like mine..well the holes dont line up with the two holes I have..so i'm guessing its not the right bracket.
Can you guys please post what my rear view mirror is suppose to look like so I can try to get the correct one and use the existing 2 holes in my truck
Thank YOu very much. !
If you know where I can get one i'd appreciate it...as I have 2 now and neither are correct...(one is new aftermarket..have the arm and mirror..but not even close as to existing holes.