Obverse
                                                                            Denomination, date and mint mark within wreath under crown, legend around rim
                                                                                                               Lettering: JOANNES. VI. D. G. PORT. BRAS.ET. ALG. REX. 320 1818 M
Reverse
                                                                            Sphere, shield
                                                                                                               Lettering: SUBQ SIGN. NATA STAB.
                        Extended information
                        
                                Year                            
                               Denomination                            
                               Currency                            
                                   Metal                                
                                   Krause catalog                                
                                    KM# 324.1
                                
                                   Ruler                                
                                   Weight                                
                                                                            8.96 g.                                                                    
                                    Diameter                                
                                                                            30.6
                                     mm.                                
                                    Thickness                                
                                    1.2 mm.                                
                                    Alignment                                
                                    Medal ↑↑
                                
                                    Shape                                
                                    Round
                                
                                    Edge                                
                                                                            Ornamented











