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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 10495. 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 10494
            
            
                
                    Great Britain - Regionals - Scotland                    UM                                    
                                    Related lotRelated to Lot 10495 · Same country / area · Pair · Mint condition · Similar period
                                                
                    
                    
                                                
                        Ask a question about Lot 10494
                        
                        Answers separate UPA catalogue facts from general philatelic guidance.
                    
                                    
                                15p bright blue Quest printing left marginal block of 6 with middle vertical pair imperf on 3 sides. Superb u.m. Exhibition quality item.
                                    
                        Philatelic terms
                        
                                                            
                                                            
                                                            
                                                            
                                                            
                                                    
                                                    
                                UM — Unmounted Mint
                                A mint stamp with original gum that has not been mounted or hinged.
                            
                                                    
                                SG — Stanley Gibbons
                                The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
                            
                                                    
                                imperf — Imperforate
                                A stamp produced without perforations separating it from adjoining stamps.
                            
                                                    
                                block — Block
                                A joined group of stamps, normally arranged in at least two rows and two columns.
                            
                                                    
                                pair — Pair
                                Two stamps that remain joined together.
                            
                                                General philatelic guidance — separate from the UPA catalogue description.
                    
                                
                    Date
1989
                    SG
S56a
                                    
                
                    
                        Estimate
                        £175.00
                    
                    
                        
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