IDing MAF calibration on SN95 MAF

Is there anything written on it? Or does it just have ford factory part numbering?

Usually calibrated MAF's will have a different electronics with other numbers scribed in.
 
Only the factory ford part number

F50F-12B579-AA
AFH80-01A

Both cross to 96 and 97 GT and 96 cobra. Under that is a heat stamped in number that is 6H22. Cannot find any reference to that number anywhere. Havnt had any luck finding out where it came from but it is brand new appearing. sensor, meter and used cable.

Anyone know anything more about these?