 
                            
                    Auction: 8007 - North Borneo - The Patrick Cassels Collection                                                                           
                    
                    Lot: 808
                
                    
                        North Borneo  1886 Perf. 14 Issue  Issued Stamps  10c. blue block of six, [23-25/33-35], variety imperforate, unused with part original gum (lightly browned), the centre vertical pair with gum thin, otherwise fine.  R.P.S. Certificate (1999). S.G. 13a, £1050. Photo
                                            
                    
                        Estimate                    
                        
                        
                        £300 to £400