Pete, do you know if the Wolf was available in the US as a mail-away post 1990? I wonder if it's much like the HISS Tank in that the mail-away versions in the US are found with an Estrela stamp due to the molds being shifted back to the US from Brazil.
I am working a deal to get the mail-in version. Once I get it, I can at least do a comparison of the three stampings (Estrela, Hasbro mail in and the domestic one, even though it's the one I had a kid and hence a Canadian version).
The
Mail-in wolf came out around 1991 and ran through about 1993... I'll check the stamp(s) in a bit to see for sure, but I believe, off the top of my head, it's just a Hasbro stamp. The Wolves are all buried at the bottom of the tub, so I have to drag them out.
Edit: Ok, I thought I'd checked that out when I posted the Mail-In Wolf page. It's the same as the 1987 Wolf, stamps and all except for the gray parts.
Thanks to Jon, I have the bug to get vehicles again. Well, at least the ones I like.
Always glad to convert another one.