No way to really tell how many Km's on the motor.
But you can do some checks to see if it was really reconditioned
How round are the piston bores?
Crankshaft bearings. Reasonably new and polished?
Receipts, Log books?
Depending on your mechanical skills you may need some help to check the motor itself.
As to the engine code, I have no idea. Doesn't match up to any code used by Toyota for engines or gearboxes.
A quick google search didn't locate it as a code for another manufacturer either.
All i can think of is that you misread