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                Perforation-assisted identificationAlready know the stamp, country or SG reference? Add its measured perforation to narrow possible catalogue matches and help distinguish perforation varieties.Try UPA’s Digital Perf Reader ↗
                
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                    Use this after identifying or searching for the stamp. Perforation is treated as one identification characteristic, not proof of identity or authenticity. Only perforation details explicitly recorded in UPA catalogue descriptions are matched.
                
            

            
                
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                    1
                    lot found                                            UPA103
                                    
                                    Catalogue closes October 6, 2026
                            

                            Related-lot discovery: showing stronger factual matches to Lot 14615. Distinctive philatelic features are prioritised over generic similarities such as format, condition or date; results are ranked locally from the full current UPA catalogue.
            
                            
                                                    
            
                                    
                                Lot 14614
            
            
                
                    Mexico - Sonora                    U                                    
                                    Related lotRelated to Lot 14615 · Same country / area · Imperforate · Similar period · Same classification
                                                
                    
                    
                                                
                        Ask a question about Lot 14614
                        
                        Answers separate UPA catalogue facts from general philatelic guidance.
                    
                                    
                                5c black, red & green (Type C), imperf with 4 jumbo margins, very fine cds used..
                                    
                        Philatelic terms
                        
                                                            
                                                            
                                                            
                                                            
                                                    
                                                    
                                U — Used
                                A stamp that has been used, normally evidenced by a postal or fiscal cancellation.
                            
                                                    
                                SG — Stanley Gibbons
                                The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
                            
                                                    
                                SG value — Stanley Gibbons catalogue value
                                The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
                            
                                                    
                                imperf — Imperforate
                                A stamp produced without perforations separating it from adjoining stamps.
                            
                                                General philatelic guidance — separate from the UPA catalogue description.
                    
                                
                    Date
1913
                    SG
S11
                    SG value
£170.00
                
                
                    
                        Estimate
                        £60.00
                    
                    
                        
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