Not sure where I should put this, I chose here because the question is about speedloaders for S&W revolvers.
Like most of us, I have a ton of speedloaders, mostly for my K frames in .38/.357.
While going through my accumulation of HKS speedloaders, I realized that a couple of the .38 speedloaders were not marked "10-A" They are marked with "III", a Roman numeral 3.
They fit my model 10. I'm now wondering if this was an old marking for the 10-A.
If no one is sure, does anyone have an email address for HKS Tool? Their web site does not have any contact information.