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LM2904: LM2904PWR PCN issue and Screen printing issue

Part Number: LM2904

we have buy LM2904PWR  and find the Screen printing is different, show as attached picture.

show as the red square, the screen printing is different.

even though their are from different factory.

and their X-ray picture are also different.

so we need TI to confirm if they are both TI LM2904PWR? or one of them is not  TI parts? 

if they are the same to LM2904PWR, how to explain the different.