What you have there is a part number. There should be a large 3 or 4 digit number that is larger and stands out more than any of the others on the label. Tell us what that number is.
Well if it running ok then I say just leave it. If there is a disadvantage it would be that it would not be compatible with aftermarket chips.
If you wanted to chage it you could go with an A9L. They go for between $100 and $150 used.