@dr. slurpee: That's a goood question.
In this episode 2x13 "Identity Crisis", the prop master has made a continuity error. I called that "Grissom's magic ID", because the next scene, some details were appearing back. This badge is a mix of a season 1/2 style.
In season 1, the badge stated "Las Vegas
Metropolitan Police Department", while in the later seasons 3/4/5 changed to "Las Vegas
Metro Police Department" and "Las Vegas Police Department" - worn inconsistently by the actors to probably avoid relations to the real LVMPD.
I changed the date back to "NOV/2001", simply for the reason, that CSI ID has begun with that expiration date in season 1.
Bill Petersen's eyes are blue, not brown - I leave it to correct fact, I guess, they went by the crappy personel shot on the ID, which looks like brown.
That particular next scene, where the magical ID has some text back: