The serial number is 6K10253C9. I think it is a 1989, but am not sure what model it is. It's in great shape and I got it for $700. Score!
There are two problems, however:
1) sometimes when I press the accelerator, it doesn't move at all, then suddenly lurches forward.
2) when fully charged as I press the accelerator, it makes a "clunk" sound. Could be due to the fact that the previous owner installed a larger motor and the torque is causing the tranny to clunk a bit.