It's a left-over from the days when the then British owners of S&W made "The Deal" with the Clinton administration.
I've forgotten the actual terms, but basically, S&W sold out the Second Amendment to the anti-gun Clinton Justice Department.
People were boycotting S&W, and some even refused to actually spell out their name.
So, they wrote it something like you listed.
S&W was sold back to an American company, and "The Deal" was simply dropped and more or less forgotten.