Thanks guys. The letters and aren't raised but incuse. I had a look a my father-in-law's Krause and there are similar reverses minus the Pisagua. It is also much the same size as a Chile 8 reales of the same date. I am not dismising fiscal document seal, or post mark theories. If anyone comes across any more information if they could post it I would be truely grateful. Rgears, Hus