Is this a game used Raiders helmet?

[sek122482]

Hi everyone, I recently acquired this Raiders helmet and was wondering if anyone could identify exactly what I have here. The person I got it from said his dad use to work for the Raiders in LA and moved with the team up to Oakland and got it from a player. The helmet is missing a sticker on one side and both ear pads. I believe it to be a game used helmet but just do not know enough about them to be certain. Any help would be greatly appreciated. Thanks!

Scott
sek122482@yahoo.com