What a great response (Or responses, to be exact). I sure know a lot more about sealed bearings than I did before I asked the question. Appreciate all the clear instructions including photos and the link to the other post on the subject.
It seems to me that one of the points to consider is that we who are working with classic and vintage bikes are dealing with an evolving design change and the term "sealed" seems to be a relative thing. It also has become clear to me why the 30 and 50 mile rides I have taken with my S10S were so smooth even though I really did not service the bearings in the hubs. In any case I will now feel less intimidated by the idea of servicing them if I have to. Thanks all.