Well, the parts are interchangeable with the Asian ETA 2836-2, but not the stem. Also, the rotor and winding plate are a solid piece of metal, not a sticker. The [censored]'s arm is a funny one, one piece( I assume bolted to the top of the [censored]) and the adjusting arm is only revealed when you remove the auto-wind parts.
Pics below.
E
From left to right: ETA 2783, ETA 2824-2 and the 3135
Asian ETA 2836-2 and 3135 side by side without the auto-wind mechanism