Auction: 16USA - The Frederick R Mayer Collection of Costa Rica                                                                          
                    
                    Lot: 52
                
                    
                        #3, 1863 4r Green, single tied to very rare registered cover from Alajuela to San Jose by barred numeral cancel (ALA-Can1), post office administrative boxed cachet ""Recept/de/Alajuela"" at bottom left, with manuscript endorsements by Postmaster Ruiz indicating the cover was sent certified and dated December 24, 1864, one small insect hole not affecting any markings or stamp, some slight soiling, fine; a most important first issue cover, being the earliest reported use of the 4r stamp and the only use of the stamp during the ""reales"" currency p   Estimate US$ 500-600                        
                                            
                
                    
                        Sold for                    
                        
                        
                        $32,500