Auction: 168 - The Philatelic Collector's Series Sale
                    
                    Lot: 726
                
                    
                        'Circle of Dots' cancellation, also known as 'thumb-print' and presumably used at Mesopotamia, complete strikes on two examples of 1880 1d Oliver-green, one additionally cancelled by "A10" barred oval and with faint perforation faults, the other being illustrated on page 129 of the St. Vincent handbook by Pierce-Messenger-Lowe; only about ten examples recorded; 
                        
                                            
                    
                        Sold for                    
                        
                        
                        $600