What is this marking on this 86' 250sx' motor?

[Jason125m]

Hello, a buddy of mine has a 86'250sx with this marking on his motor. Its right on the center left case, behind the drainplug.

Has anyone ever seen this before?

If so, what is it/ what does it mean?

It leads me to believe it is an 87 motor? Here is the serial if anyone can run it..
TE04E-603281

Any info is appreciated.

Thanks, Jason.

http://img4.imageshack.us/img4/8017/380uj.jpg

[Vealmonkey]

It could have been a mechanic putting his initials on the trike. At some dealerships, the mechanics would initial the trike on it's initial service or first service, that way if the trike ever returned the same mechanic would more than likely work on it or get blamed for bad or wrong service. Some shops do the same thing with cars.

[Jason125m]

Interesting.. Thanks for the info Vealmonkey! Could anyone run that serial for me if possible? I've been searching for how to do it with no luck.

Thanks, Jason

[MonroeMike]

It's an 86 engine.

[Jason125m]

Thanks Mike!

[polka]

Here are the charts for VIN and serial for the 250sx, too.

http://images.cmsnl.com/img/partslists/serial-numbers-atc250sx-1986-usa_bighu0302serial_9f54.gif
http://images.cmsnl.com/img/partslists/vin-table-atc250sx-1986-usa_bighu0302vin_e69d.gif