Auction: 324 - The Numismatic Collector's Series Sale                                                                                                                                              
                    
                    Lot: 1324
                
                    
                        Roberts Petroleum Torpedo Co. (New York) 1868. 250 shares. Issued, not cancelled. No.143. Oil rigs and barges. Exploding torpedo in an oil well, left. Issued to W. R. Roberts, and signed by him as Secretary. This certificate clearly illustrates that "fracking" has been practiced since the early days of the oil industry. VF+. Bright and clean. The left margin is narrow, and a small pinhole is well hidden in the upper left corner, but these minor distractions are mentioned merely for the sake of accuracy.  
                        
                                            
                
                    
                        Estimate                    
                        
                        
                        $500 to $750