Pending on the grain,Brazilian has many different apperances.Another thought is back in 1973 the bow finishes used had no UV blocker.Which causes the Brazilian to get a light color,caused more from the finish yellowing.But I would say there were really only 2 woods used by Herters in 1973 on your model,Brazilian and Hondurin rosewood..But I bet yours is just light colored Brazilian rosewood.....bowdoc