Edit: Reynolds says it makes no difference---the difference in "finish" is due to the difference in the two rollers used to make the foil.
This post was edited by tom jackson at December 17, 2017 10:19 PM MST
It's funny---now that I am retired, I can search for answers for things that I was curious about. The difference in the appearance of the two sides of the foil was so great, I thought there must be a reason.
There was, but only in the method manufacturing---not in its function.