Which year was this figure set produced?

Posted in Identify Help

I have bought this figure set and tried to find all the information related to it. I found out it was produced by Shawsons and it is authentic figures but I couldn't find when it was produced. I make a list of all the figures I have with the information so I would like to know that information. Is there anyone who can help me? I post the photo of original box. Thanks...