sanken 2sc2921&2sa1215 fake or genuine?

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sanken 2sc2921&2sa1215 fake or genuine?

I bought some sanken 2sc2921&2sa1215 from retail shop in thailand but I'm not sure they are fake or genuine. I found 2sa1215 is slightly bigger than 2sc2921. From attach files, who can tell me they are fake?
 

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