Also, 3 x 744s (-OJG, -OJH, -OJJ) are listed on
planemart.com but there's no indication of when the listing went up - only when the airframes will be available (earliest being Sep '12).
Td67, if you click on the 'Model' 747-438 link in the ad, it shows each of the 3 aircraft were listed on 7/5/2011 (That's 5th July 2011)