Scott, I assume it's a seedling- there are two entertwined trunks growing together, which I take to be from a discarded apple core. Could be wrong. As you can see from the scale of the pen they're fairly small, but they are nicely shaped and beautifully colored, and who knows? They may even be good for something!
Here's a picture (resized, I hope) of the whole tree to add some perspective. The pippins are way off to the right side, if you can find them.
The other apples are primarily Liberty. Off to the left are Pristine and Pixie Crunch (not much bigger than the seedlings), Yellow Delicious, Rubinette, Karmijn d' Sonneville, Supreme, Montana Red, Fireside,; somewhere in there are a few Stayman Winesaps and Prairie Spy. From the other side you can find Sweet 16 and Carousel and maybe a few others. A few varieties have yet to bear, and a couple had their nametags confiscated by the wind one year and have yet to prove themselves.