 
                            
                    Auction: 15USA - The William H. Gross Collection                                                                                         
                    
                    Lot: 61
                
                    
                        S.G. #9, 1900 6p Mafeking surcharge on 3p Purple on yellow, fresh mint example of this very rare stamp, possessing especially strong color on bright paper, o.g., h.r., certainly fine for this; small ""U. of M. Stamp/Collection"" handstamp on reverse and accompanied by a 1989 BPA certificate; ex-Gibralter (Scott #170; $5,750.   Estimate US$ 3,200-4,000                        
                                            
                
                    
                        Sold for                    
                        
                        
                        $2,575