MARITIMA DEL GRAN BILBAO S.A.
The funnel is black with a broad white band edged red above and below and bearing black M.G.B. lettering. The red flag has a very broad white horizontal band with the same black letters.
The funnel is black with a broad white band edged red above and below and bearing black M.G.B. lettering. The red flag has a very broad white horizontal band with the same black letters.