
The Lilly Imperial Advertising Gentleman’s Folder Pocket Knife is a collectible folding knife made in the United States between 1946-1956. It features a stainless steel blade with a drop point and pen blade type, measuring 1 3/8″ and 1 3/16″ respectively. The knife has an ambidextrous opening mechanism with a manual manual lock type, and a silver color stainless steel handle. This original two-blade pocketknife is part of the Skyline product line and is a unique piece for collectors of modern folding knives.
Quick Answer: The Lilly Imperial Advertising Gentleman’s Folder is a mid-20th century collectible pocket knife made by Imperial Knife Company, often featuring advertising engravings (like the Lilly pharmaceutical caduceus logo). These knives are valued by collectors for their vintage design, advertising tie-in, and Imperial’s historical role in American cutlery.
Overview of the Knife
• Maker: Imperial Knife Company, Providence, Rhode Island.
• Era: Circa 1946–1956, based on tang stamps and advertising style.
• Type: Gentleman’s folder pocket knife — small, slim, designed for everyday carry.
• Advertising: Features Lilly pharmaceutical branding with a caduceus symbol, making it both a knife collectible and advertising memorabilia.
• Condition: Typically found used, with stainless steel blades and celluloid or metal handles.
Key Features
• Blades:
• Drop point and pen blade styles.
• Sizes around 1 3/8″ and 1 3/16″.
• Opening Mechanism: Manual, non-locking slip joint.
• Handle: Often silver-tone with advertising imprint.
• Dexterity: Ambidextrous use.
• Edge: Plain edge, suitable for light cutting tasks.
About Imperial Knife Company
• Founded in 1916, Imperial started as a maker of watch chain knives before expanding into pocket knives.
• Known for affordable, mass-produced knives that were widely distributed in the U.S. mid-century.
• Imperial merged with Schrade in later years, but its vintage advertising knives remain popular among collectors.
Collectibility & Value
• Advertising knives are highly collectible because they combine cutlery history with corporate branding.
• Prices vary depending on condition:
• Used examples often sell in the $20–$40 range.
• Mint or rare advertising variants can fetch higher prices.
• Collectors value them for:
• Historical branding (Eli Lilly pharmaceutical tie-in).
• Mid-century American knife craftsmanship.
• Small size and gentleman’s style, which makes them unique compared to larger utility knives.
Buying & Selling Notes
• Found on platforms like eBay and specialty knife trading sites.
• Condition is critical: scratches, blade wear, and handle cracks affect value.
• Many sellers highlight returns accepted and authenticity guarantees for peace of mind.
Why Collect?
• Cross-collectible appeal: Knife collectors, advertising memorabilia collectors, and pharmaceutical history enthusiasts all find value.
• Conversation piece: Combines practical design with corporate history.
• Affordable entry point: Compared to rare Case or Remington knives, Imperial advertising folders are budget-friendly collectibles.
In summary: The Used Original Lilly Imperial Advertising Gentleman’s Folder is a mid-20th century pocket knife made by Imperial, notable for its Eli Lilly branding and slim gentleman’s design. It’s a modestly priced collectible (around $20–$40) that appeals to both knife enthusiasts and advertising memorabilia collectors.
Sources: eBay listing of Lilly Imperial Gentleman’s Folder Imperial Knives history – All About Pocket Knives Knife Trading Post – Vintage knives marketplace


























