Robert S. Butler posted:StevefromPa, Adriatic, and SNCF231E - just to add to the confusion below is a timeline progression of the trademark from some boxed sets of Bing.
Box lid from train cataloged in 1904 - Clockwork European outline engine
Box lid from train cataloged 1914 - American Market
Box lid from trains mid-1920's - train set is NYC for the American market. Cars have plated wheels and are illuminated
Box lid from trains cataloged late 1920's - Generic set - electric outline locomotive passenger train would fit in anywhere
I believe the GBN logo means gebruder bing nuremberg, or Brothers Bing of Nuremberg. I would guess the reason why they used Bavaria in the 20's for the American market was because of the anti-German sentiment from WW1.
George