Auction: 25026 - Stamps and Covers of Africa Featuring the 'Protea' Collection of South Africa
                    
                    Lot: 1536
                
                    
                        Zanzibar
1899-1901 1a. to 5r. set of seventeen, each value in a corner imperforate plate proof block of four on ungummed watermarked paper, all cut from the De la Rue reference sheets, each corner block with registration date stamped in the corner, some are initialled; These blocks were kept so that later printings could be matched to these colours; superb and unique
De La Rue archives
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                        Sold for                    
                        
                        
                        £2,100                    
                    
                        
                            Starting price                        
                            
                            
                            £420