I think initially the they gave only one, either FBR letter or Order in original. That's what happened with me. When I went for registration, one was missing and that's what ETO guys say that NOC is missing. Many vehicles were sold without the 2nd documents and seller didn't tell the buyer about it. I had to pull some strings at that time and got delivered the 2nd document later.
In Lahore I got the number in June 2013 and no clearance from 15 etc was asked.
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