The other photo was posted on GMIC
http://gmic.co.uk/index.php?showtopic=43214
You have to be a member to see the photos there, so I'll take the liberty of adding it here. I'm a Moderator over there so I'm sure my fellow Mod who posted it won't mind in the interests of trying to establish the identity of this type of badge.
Now, to me, this looks like the type of tough Hombre who'd be in the Military Prison service rather than being a retired pensioner Warden type.