Marking PIC16F1783T-I/SS

Hello!

Does anyone know why this part has a bottom marking and different mold styles?
What is the meaning of that marking? The datasheet shows only the meaning of the top marking.
Does that affect something?

Hello and welcome to the Forum. Can you provide a photo of the bottom marking? I believe it has to do with country of origin, but I would have to see it to confirm.

It’s a number