LM3S811: LM3S811 two top marking code? LM3S811 38WG4 A129

Part Number: LM3S811

Tool/software:

Hello, is there the LM3S811-IQN50-C2 have didererent marking code ?  the datasheet shows LM3S811 IQN50 PT, but i got two marking code : LM3S811 IQN50 PT and  LM3S811 38WG4 A129