Which HarnWorld set?

I'm not sure if this is the correct place for this query, but I thought I would ask here. I'll apologize in advance if this is not the correct place for such a question.

That said, hello! I'm new here, but have been roleplaying for many, many years. I bought the HarnWorld 2nd Edition folio back in the 90s, but after a few years and a move, it is long gone. However, I intend to repurchase said set and noticed there are two 2nd Edition sets - the aforementioned folio and a box set. I guess my question is, what are the differences between the two sets? They both look to be 2nd Edition HarnWorld sets, but I don't know the difference between the two. If someone could enlighten me, I would be grateful.