Joe - yes; I have the K-line. Love it - runs well, K-line cruise and all. It has one big flaw - maybe I'll correct it one day, without butchering it - as a bi-directional loco (and a great switcher, actually - very electrically sure-footed) it needs a decent-looking front O-gauge coupler - Electrocoupler if possible, mechanical or dummy if necessary, and I don't mean the saggy, too-long O-gauge coupler in the box. Shouldn't be too hard - I simply have never addressed the issue. A "Pocket Hudson" - esthetically, kinda, sorta. Love to run it backwards.
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Murnane - there was a NYC version - I have it. Not sure of the number or date of manufacture. I agree - great-looking loco, though I believe that Lionel's was a B&M (?) prototype. I'm fine with that - it's pretty close. Like 4-6-0's, there was often a generic look about them. I like Moguls better than 4-6-0's for some reason. The SP had some huge ones - for a 2-6-0.
I had been looking for a while - and one showed up on daBay, 2 or so years ago. Wasn't even a bad price; I jumped on it. TMCC, etc. Runs well. They are indeed rare.