I've already posted this elsewhere but I'll do it here as well since it seems more appropriate to this thread.

I received 4 MLL passes as part of my SE kit when I qualified in November. These passes have neither the blue strip nor the 4 AC watermarks. I got them directly from AC/AP. Other than the missing security features the only difference is that the new ones are a darker blue than my one remaining pass from my E kit (fading of the earlier ones?) They're also individual certs, not two-cert pairs with a perforation like the earlier ones.

I'd say they changed how they were printed mid-year. Makes me worry about giving them to someone to use now though.