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George Ibberson Sheffield Jack Knife with Marlinspike
George Ibberson & Co. of Sheffield, England produced folding jack knives for both military contract and civilian sailing/rigging markets; this example carries the maker's tang stamp on the marlinspike tool. The pattern (a main blade, secondary blade, combination screwdriver/tin-opener, and hooked marlinspike) is the classic configuration Sheffield cutlers supplied to the Royal Navy and Army through both World Wars, later continuing in civilian production for sailors and yachtsmen.
The four tools are fitted to checkered stainless steel scales, secured by through-rivets.
This is a knife that was carried and worked, not shelved.
Specifications
| Maker / Brand | George Ibberson & Co |
| Estimated Era | Unknown |
| Pattern | Jack |
| Number of Blades | 4 |
| Lock Type | Slip Joint |
| Blade Length | 2.5 in / 6.4 cm |
| Overall Length | 3.5 in / 8.9 cm closed |
| Blade Material | Carbon Steel |
| Handle Material | Steel |
| Blade Style | Spear point |
| Markings / Stamp | IBBERSON, MADE IN ENGLAND, stamped on the marlinspike tool. A rectangular cartouche on the reverse scale (likely intended for an inspection or ownership mark) is worn past legibility. |
Condition Grade
Good
Condition Notes
Genuine daily-use wear along the edges of all four tools (both blades, opener, and marlinspike), consistent with a knife that was actually carried and worked. Every joint has a strong, positive snap with no play. Checkered scales show handling wear typical of age.