Shoe width questions

I am preparing a shoe listing (ones I inquired about eons ago - 69-71 brown pumps) and the width marking is 3A over 5A. Does that mean triple A - it measures between 2-5/8 to 2-3/4" at widest part. I've looked at several conversion charts, but I can't seem to find anything on width (either that or I'm blind).

Thanks!!!

Oh yes, they're a NA 8-1/2
 
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