Audemars Piguet Royal Oak Extra-Thin The Hour Glass, 39mm green dial, Yellow Gold Watch 15205BA.OO.1240BA.01
| Brand | Audemars Piguet | 
| Model number | 15205BA.OO.1240BA.01 | 
| Series | Royal Oak Extra-thin | 
| Case | 18-carat yellow gold case, glareproofed sapphire crystal and caseback, special rotor engraved with “The Hour Glass” logo and the legend “One of Fifty” | 
| Functions | Hours, minutes, center seconds, date | 
| Case width | 39mm | 
| Case thickness | 8.10mm | 
| Water resistance | 50m | 
| Dial | Green dial with “Petite Tapisserie” pattern, yellow gold applied hour-markers and Royal Oak hands with luminescent coating | 
| Bracelet | 18-carat yellow gold bracelet with AP folding clasp. | 
| Direction of automatic winding | Bidirectional | 
| Number of parts | 247 | 
| Power reserve | 40h | 
 
 
                    
                     
                    
                     
                            
                           
                            
                           
      