Thank you for posting this. I have a 4" 624 I bought about ten years ago. It has an AHBxxxx serial number. It is also marked inside the stocks with a July 1985 date, coincidentally my parents 25th wedding anniversary, which I think is kind of cool. Even if it were in the recalled series, I'd never send it in. S&W has no new products I'd trade for it right now.
I know I can shoot .44 Spls in my Magnums. It just ain't the same.