I quick check on Steamlocomotive.com shows that numbers 262, 265, 269, 272, 275, 279, 281 and 286 are all still with us.

An NdeM engine numbered 67 is located in a museum in Mexico City. Not sure if this is the same one, but my guess is that might be the one from the Magnificent Seven. It's been too long since I've seen it to remember what the engine looked like. It is apparently in a different class than the 279. There is also a number 69 in existence.

Sadly, I also don't have my guide to steam locomotives since 1900, which gave the class ranges, so my knowledge at this point stops.