OK, I have secured (EBayed) a Moore B-12. I have heard that the Moore B series was made for them by Boston. Oddly enough this B-12 comes with a Boston nib. When it arrives I have several Boston 12's to compare it to as a Boston 12 is a common model. I'd intended to corner a Moore B before this but, we'll see how this one goes. If the comparisons are fairly equivalent we'll score a different model B and continue the experiment. It is likely true that Moore B's were made by Boston as Boston folks came over to a restructured American (becoming Moore after Boston's sale to Wahl) by April of 1917. When Wahl finalized the sale of Boston and what Boston might have been producing in 1917 is likely to be conjecture only with the B models supporting a likely though ultimately unproveable conclusion.
Has anyone ever done this comparison?
Roger W.