Metal Slug 2 MVS question

Hi, just wondering has anyone see Metal Slug 2 MVS cart with serial number on the label?

Because I had like 3 metal slug 2 but they all seem to be bootleg/flash rom.

That why I'm asking to see if anyone seen/have the Original copy.

thanks.

I have a US one and the serial number is 007616. So to answer your question, yes I have seen one.