Tang Number Chart Main Blade Identity 1. Regular Clip 2. Regular Spear 3. S. F. /Wharncliffe 4. Spey 5. Drop Point/Skinner 6. Sabre Clip 7. Sabre Spear 8. Muskrat Clip 9. Cotton Sampler   Pattern#       Main Blade          No. Of Blades        Year 73                5                        2                            08 23                5                        2                            08 53                8                        3                            08 53                8                        2                            08 73                5                        1                            08 For Example if the Tang Stamp reads 735208 you would be looking at a pattern # 73 the main blade is a Drop point/Skinner, the knife has 2 blades and it was made in 2008.