Please add a note to this part, as currently the A/B designation implies an incorrect
chronology. Type B (with the thinner top and LEGO logo) was the original variant,
as seen in the below letter from 1957 announcing their release in Denmark. At
some point, likely in the early 1960s, the part was redesigned to be stronger
with a much thicker top and removed the dogbone LEGO logo (Type A).
USA, Missouri
