High Altitude Merlin 1C

[edkyle99]

Did anyone else catch that brief moment during the Falcon 1-3 prelaunch video of the Elon Musk factory walk down when he showed the thrust chamber of a high-altitude Merlin 1C next to a set of low altitude Merlin 1C thrust chambers?  It appeared to have a longer regeneratively cooled divergent section than the standard chambers.  That was the first time I've seen an image of what must be part of the Falcon 9 second stage engine. 

Did anyone happen to record that part of the video?

 - Ed Kyle 

[Chris Bergin]

Saw that too Ed. They promised that the full video of the tour would be made available on the SpaceX site. Nothing yet, however.