Dacia was a province of the Roman Empire from 106 to 274–275 AD. It was from the very beginning organized as an imperial province, fitting a border area, and remained so throughout the Roman occupation.
The Roman authorities undertook a massive and organized colonization of Dacia. New mines were opened and ore extraction intensified, while agriculture, stock breeding, and commerce flourished in the province. Dacia began to supply grain not only to the military personnel stationed in the province but also to the rest of the Balkan area. It became an urban province, with about 10 cities known, 8 of which held the highest rank of colonia, though the number of cities was fewer than in the region's other provinces.
The Roman authorities undertook a massive and organized colonization of Dacia. New mines were opened and ore extraction intensified, while agriculture, stock breeding, and commerce flourished in the province. Dacia began to supply grain not only to the military personnel stationed in the province but also to the rest of the Balkan area. It became an urban province, with about 10 cities known, 8 of which held the highest rank of colonia, though the number of cities was fewer than in the region's other provinces.

                    (1)
                                 Decius
                            
                
                
                 
                
                
                    
                        An
                        AE
                            unit
                        struck                             250-251 AD
 in
                                        Ulpia Traiana (Dacia)?
                                    
                    
                
                
                
                                Obverse: laureate, draped and cuirassed bust right from behind; IMP TRAIANVS DECIVS AVG
                            
                            
                                Reverse: Dacia holding bundle of rice and short scepter standing half-left between lion and eagle, PROVIN_C_IA DACIA / AN V
                            
                            
                            Diameter: 
                                25.5 mm
                            
Die Orientation: -
Weight: 12.9 g
                            
                        
                        
                        Die Orientation: -
Weight: 12.9 g
VII 250 - VI 251 AD
                        
                        
                        
                                AMNG (Pick) Ref: 39; Pick-Martin Ref.: 3.56.1
                        
                    
                    (2)
                            Geto-Dacians
                            
                
                
                .jpg) 
                
                
                    
                        An
                        AU
                                        Stater
                                    
                        struck                             c. 40-29 BC
 in
                                        Sarmizegetusa?
                                    
                    
                
                
                
                                Obverse: togate L. Junius Brutus between two lictors left; KOΣΩN
                            
                            
                                Reverse: eagle left, holding wreath and scepter in talon
                            
                            
                            Diameter: 
                                19 mm
                            
Die Orientation: -
Weight: 8.6 g
                            
                        
                        
                        Die Orientation: -
Weight: 8.6 g
Original issue was made by L. Junius Brutus prior the battle of Philippi to pay Geto-Dacian troops. Legend (BR) KOΣΩN probably means "of Brutus the consul". These coins were subsequently imitated in slightely worse style and gold quality. They were made of Dacian gold possibly struck in Sarmizegetusa.                        
                        
                        
                                Iliescu 2; RPC I 1701B; BMC Thrace p. 208, 2.
                        
                    
                    (3)
                                 Valerian I
                            
                
                
                 
                
                
                    
                        An
                        AE
                            unit
                        struck                             253-254 AD
 in
                                        Ulpia Traiana (Dacia)?
                                    
                    
                
                
                
                                Obverse: Laureate, draped and cuirassed bust right from behind; IMP P LIC VALERIANO AVG
                            
                            
                                Reverse: Dacia holding branch and scepter standing half-left between lion and eagle; PROVIN_CIA DACIA / AN VIII
                            
                            
                            Diameter: 
                                25 mm
                            
Die Orientation: -
Weight: 10.48 g
                            
                        
                        
                        Die Orientation: -
Weight: 10.48 g
X 253 - VII 254 AD                        
                        
                        
                                Pick-Martin Ref.: 7.56.(1/2)
                        
                    