Comics Spain Droids figure: R2-D2 (in cartoon colors)
He was produced in 1986, and has no variations. Compared to his droid counterpart, C-3PO, this figure is easier to find, in both the US and abroad.
R2-D2 (Disney / Star Tours)
R2-D2 (Disney / Star Tours) was produced in 1990, and has no variations. While this figure was first produced in 1990 he was available up until 2003 at Disney theme park stores!
At first glance, the differences between the Comics Spain and Disney R2-D2 figures aren't all that clear, especially compared to other figures, like C-3PO. You'll notice that while the mold may look the same, the Comics Spain version is larger, and more detailed. To grasp the differences between the figures, the best way is through the colors used on each. The Comics Spain figure has a lighter shade of blue, more true to the cartoon, while the Disney version is darker. The Comics Spain figure also sports a yellow 'eye', as well as 2 green panels and another yellow button on the back - while all the Disney paint details are done in red and blue. Each figure is marked, which clearly designates its origin, the Comics Spain figures are marked "86 Lucas Film Ltd. Comics Spain" (on the back of the legs), while the Disney version is marked "LFL Made in China" (on the bottom of the foot).