Searchlight Car???

[Super]

Due to the generosity of this great seller that had this different Searchlight car Listed we now have it in our collection. Here is a picture of the 3 we know of. All 3 have 2009 Mattel on the bottom There is a slight difference in the one with the white search light as its light housing is a tad bit deeper than the other 2 which are identical. Having this in hand I can now see the design better and have found where its from. It has a lifesaver in the middle with the letters SSRC stands for Sodor Search and Rescue and it came with a James release. Is this a rarer release as you just don't see this much?

EDIT:
The Trackmaster Wikia has "Prototype" on its page. Maybe Jdogman can chime in on this? http://thomastrackmaster.wikia.com/wiki/...and_Rescue