How to Authenticate a Medieval Sword Before You Buy: A Collector’s Checklist

You’ve just spotted a gorgeous 14th‑century longsword on a dealer’s site, and your heart does a little jump. The price looks tempting, but a mistake could cost you a fortune—or a fake that will crumble in a year. Knowing how to spot the real thing before you hand over cash is the difference between a prized addition and a regretful purchase. Below is the step‑by‑step checklist I use every time I’m about to add a blade to the Blade & Lore collection.

1. Start with Provenance – The Sword’s Story

A genuine medieval sword rarely appears out of thin air. Provenance is the documented history of the piece. Look for:

• Seller’s records – receipts, auction catalogs, or museum loan papers.
• Previous owners – names of reputable collectors or institutions.
• Photographic timeline – older photos that show the sword before any recent restoration.

If the seller can’t give you at least one solid reference, treat the blade with caution. I once bought a “original” arming sword from a garage sale with no paperwork; it turned out to be a 19th‑century replica after a careful inspection.

2. Examine the Steel – Look for the Right Patina

Medieval blades were forged from carbon steel, which over centuries develops a thin, uneven patina. Here’s what to watch for:

• Color – A genuine blade will have a mix of dark gray, brown, and occasional orange spots where rust has formed and then stabilized.
• Surface texture – Real steel shows tiny scratches from centuries of handling; a brand‑new replica will be uniformly smooth.
• Hardness test – Lightly tap the edge with a nail; a true medieval sword will give a faint “ding” rather than a sharp clang.

Never use chemicals that could damage the blade. A simple water droplet test works: a real patina will absorb the water slowly, while a modern coating will bead up.

3. Check the Tang – The Hidden Backbone

The tang is the part of the blade that extends into the hilt. In medieval swords, the tang is usually full‑length (running the entire length of the grip) and visible at the pommel. To inspect:

1. Remove the pommel (most historic swords have a removable pommel).
2. Look for a solid steel piece that matches the blade’s width.
3. Feel for any seams or welds – a forged tang will be seamless; a modern replica may have a welded or bolted tang.

If the tang is hidden behind a wooden grip, ask the seller for a close‑up photo or a video of the removal process.

4. Study the Hilt – Materials and Construction

The hilt tells a story of its own. Medieval hilts were made from wood, bone, horn, or metal, often wrapped in leather or wire. Key points:

• Guard shape – Cross‑guards from the 13th‑14th centuries are simple straight bars; later swords have more elaborate curved guards.
• Pommel style – Wheel pommels, spherical pommels, and “cog” pommels each belong to specific periods and regions.
• Wear patterns – Look for genuine wear where the hand would have rested. Fresh polish on a “worn” grip is a red flag.

I once examined a sword with a beautifully carved walnut grip that looked centuries old. A closer look revealed a brand‑new leather wrap glued on top – a clear sign of a modern reconstruction.

5. Look for Hallmarks and Inscriptions

Many medieval blades bear maker’s marks, guild symbols, or battle inscriptions. These are usually tiny and may be partially corroded. To read them:

• Use a 10× magnifying glass and a raking light (light from the side).
• Compare the symbols with known medieval marks – resources like “The Sword in the Museum” by Oakeshott are invaluable.
• Beware of modern stamps that mimic old fonts; they often lack the irregularities of hand‑carved marks.

A friend of mine once showed me a sword with a “St. George” inscription that looked perfect. Under magnification, the letters were perfectly uniform – a giveaway that they were laser‑etched in the last decade.

6. Test the Balance – Feel the Blade

A medieval sword’s balance is a subtle but telling clue. Hold the sword by the grip and let it rest on your palm. A well‑balanced blade will feel like an extension of your arm, not a wobbling stick. Modern replicas often have a heavier pommel or a lighter blade, throwing off the balance.

When I first handled a 15th‑century falchion, its balance was so natural I could swing it without thinking. A cheap copy I bought later felt “head‑heavy” – the weight was all in the tip, a sign of a thin, modern steel blade.

7. Verify the Weight – Use a Scale

Weight can be measured with a kitchen scale (to the nearest gram). Compare the result with published weights for swords of that type and period. A significant deviation (more than 10% lighter or heavier) suggests a different material or a replica.

8. Ask About Restoration – What Has Been Done?

Even authentic swords often undergo some restoration. Honest sellers will disclose:

• Cleaning methods – acid baths, electrolytic reduction, etc.
• Replacements – new pommels, grips, or fittings.
• Re‑tempering – heat treatment that can alter the steel’s original properties.

If the seller claims the sword is “in original condition” but the blade looks unnaturally bright, ask for details. Over‑polished blades are often modern tricks to hide flaws.

9. Get a Second Opinion – Expert or Museum

When in doubt, reach out to a trusted expert. Many museums have curators who will look at photos and give a quick assessment. I’ve sent pictures to the Royal Armouries; they usually spot a fake within minutes.

10. Trust Your Instincts – The Collector’s Gut

After you’ve run through the checklist, step back and ask yourself: does the sword feel right? Does the story line up? If something feels off, it probably is. I once walked away from a “rare” sword because the seller’s enthusiasm seemed forced – later I learned it was a well‑made replica sold as original.

Quick Checklist Recap

Use this list the next time you’re eyeing a medieval blade. A little diligence now saves you from a costly disappointment later, and it keeps the spirit of true sword collecting alive at Blade & Lore.