These are all limited editions or discontinued models!
From top left: British Airways Boeing 747-400 (old color), Singapore Airlines Boeing 777-200--50th Anniversary, British Airways Boeing 777 (old color), Orbis Hospital, KLM Asia Boeing 747-400--"the City of Mexico", Lufthansa Boeing 747-400--"Berlin", South African Airways Boeing 747-300--"Ndizani", Cathay Pacific Airways Boeing 747-200--"the Spirit of Hong Kong"