Here's why Armory v. Delamirie is almost always the first finders case you read in Property: it takes a scruffy fact pattern — a chimney sweep's boy finds a jewel in the street and a crooked goldsmith tries to keep it — and pulls out the single most important idea in the whole subject. You don't need to own something to have rights in it. Possession alone gives you a title good against the world, minus one person: the true owner. Get that idea locked in now, because it runs through the entire course.

What did Armory v. Delamirie hold?

In Armory v. Delamirie, decided by the Court of King's Bench in England in 1722, the court held that a chimney sweep's boy who found a jewel had a possessory property right in it that was good against everyone except the rightful owner. Because the goldsmith's apprentice had wrongfully removed the stone from its setting, the finder could recover it — or its full value — from the goldsmith. This is the case that gives us relative title: property rights are relative, and a prior possessor prevails over a later, wrongful possessor.

Case Summary

Armory v. Delamirie, 1 Strange 505 (King's Bench 1722), is an English decision by the Court of King's Bench. A chimney sweep's boy found a jeweled ring or brooch and took it to a goldsmith to have it appraised. The goldsmith's apprentice removed the stone and refused to return it. The finder sued in trover — the common-law action for the value of wrongfully converted personal property. The court held for the finder, establishing that a finder holds title superior to all but the true owner, and set a damages rule that presumes the highest value against a wrongdoer.

What are the facts of Armory v. Delamirie?

The legally significant facts are lean, which is part of why the case is so teachable:

• Armory was a chimney sweep's boy who found a jewel (set in a ring or piece of jewelry) — he was not the true owner, and the true owner never appears in the case.
• He took the jewel to the shop of Delamirie, a goldsmith, to learn what it was worth.
• Under the pretense of weighing or examining it, the goldsmith's apprentice removed the stone from its socket.
• The goldsmith offered the boy a small sum of money for the setting, which the boy refused, and then returned the socket without the stone.
• The boy sued the goldsmith (the master is liable for the apprentice's act) for the value of the jewel.

Note what is not a fact: there is no claim by the true owner, and there is no suggestion the boy stole the jewel. That absence is the whole point — the dispute is between two non-owners, the finder and the goldsmith.

Procedural History

The boy (Armory) brought an action of trover against the goldsmith (Delamirie) to recover the value of the converted jewel. The case was tried before Chief Justice Pratt at the Court of King's Bench. This is a trial-level ruling that includes the court's jury instructions — which is exactly why professors love it, because the holding lives partly in how the jury was told to measure damages.

What was the legal issue in Armory v. Delamirie?

Two questions, and you should keep them separate on a cold call:

1. Property/title question: Does a finder of lost property acquire a property right sufficient to recover it (or its value) from a later possessor who is not the true owner?
2. Damages question: When a wrongdoer has destroyed or concealed the evidence of the property's exact value (the goldsmith kept the stone), how should the jury measure damages?

Holding & Rule

Holding: Yes on both. The court held that the finder has a property right in the jewel good against everyone except the rightful owner, and that this right lets him recover from the goldsmith. On damages, the court held that against a wrongdoer the jury should presume the strongest case against him.

The rules — put these in your outline verbatim:

• Finder's title rule: "The finder of a jewel, though he does not by such finding acquire an absolute property or ownership, yet he has such a property as will enable him to keep it against all but the rightful owner." This is relative title.
• Damages rule (the "presume the maximum against a wrongdoer" rule): Where the defendant's wrongdoing makes the exact value uncertain, the jury may presume that the missing item was of the finest quality that would fit the setting, and value it accordingly. The wrongdoer, not the innocent plaintiff, bears the risk of the uncertainty he created.

Reasoning

The court's logic is short but structurally important. On the property point, the court did not ask whether Armory owned the jewel — it asked whether he had possession, and whether the goldsmith had any better right. The finder had prior possession; the goldsmith had none. Between two parties who both lack absolute ownership, the one with prior possession wins. This is the birth of the idea that title is relative — the law protects possession itself, so that people can't self-help their way into other people's stuff, and so that the peaceful ordering of possessions is preserved even when the true owner is absent.

On damages, the court refused to let the goldsmith benefit from his own wrong. Because Delamirie kept the stone, only he knew (or could prove) its true quality. Rather than force the boy to prove a value he had no way to establish, the court shifted the risk of uncertainty onto the wrongdoer: presume the best stone that would fit the socket. This is a recurring theme in the law — the wrongdoer bears the risk of the evidentiary gap he caused.

Why Armory v. Delamirie Matters

This case is the entry point to the entire law of possession, and possession is the spine of Property. Armory teaches you that ownership is not a single, absolute thing — it's a bundle of rights that can be held in degrees and measured relative to a particular opponent. When you later read finders cases like Hannah v. Peel, Bridges v. Hawkesworth, South Staffordshire Water Co. v. Sharman, and adverse possession, wild-animal capture (Pierson v. Post), and even bailment, you are applying the same core insight: prior possession creates a legally protected right. Armory is the seed.

Cold-Call Prep: What Your Professor Will Ask

Property professors run Armory in a predictable sequence. Have answers ready for each:

• "Who owned the jewel?" — The true owner, who never appears. Armory did not own it. This is the trap; if you say the boy owned it, you've missed the whole point. He had possession and a relative title, not absolute ownership.
• "If the boy didn't own it, how can he win?" — Because the law protects possession. Between the finder and the goldsmith, the finder had the prior and superior right. Title is relative; you win against anyone with a weaker claim.
• "Suppose the true owner shows up next week and sues the boy — does the boy win?" — No. The finder's title is good against "all but the rightful owner." The whole point of the rule is that it does not defeat the true owner.
• "Why should we protect a finder at all? Isn't that rewarding someone who didn't earn it?" — To discourage self-help and theft, to keep the peace, and to encourage found property to re-enter circulation. If finders had no rights, anyone could grab anything from anyone.
• "How did the court measure damages, and why?" — Presume the finest jewel that fits the socket, because the goldsmith's wrongdoing destroyed the proof. The wrongdoer bears the risk of the uncertainty he created. Be ready to explain that this is an evidentiary/policy rule, not a property rule.
• "What if the boy had stolen the jewel instead of finding it — same result?" — This is the follow-up that separates the A students. Even a thief's prior possession generally beats a later wrongful possessor (the jus tertii problem), but many courts and professors will push you on whether a wrongful possessor should get the same protection. Flag the tension; you don't need a perfect answer, you need to see the issue.

On the Exam

Armory shows up on the exam as a possession dispute between two non-owners — a lost watch found by A and later taken by B; goods left with a repair shop; a chattel dug up on someone's land. The issue-spotter cue is: the true owner is missing or irrelevant, and two parties are fighting over the same object.

The trap students fall into: analyzing whether either party is the "true owner" and getting stuck when neither is. Don't. The exam question is almost never who owns it absolutely — it's who has the superior relative title. Frame it as: (1) who possessed first, (2) whether the later party's possession was wrongful, and (3) that prior peaceable possession prevails against all but the true owner. Then, if the facts show a wrongdoer concealing value, add the Armory damages rule — presume the maximum against the wrongdoer. Deploying both prongs (title and damages) is how you show you actually read Armory rather than just skimmed the finder's rule.

Related Cases

• Hannah v. Peel — a found brooch on land the owner had never occupied; refines finder vs. landowner.
• Bridges v. Hawkesworth — banknotes found on a shop floor; finder beats shopkeeper.
• South Staffordshire Water Co. v. Sharman — rings found in the mud of a pool; landowner in possession of the locus beats the finder-employee. The counterpoint to Bridges.
• McAvoy v. Medina — the mislaid vs. lost distinction; a pocketbook left on a counter.
• Pierson v. Post — capture of wild animals; possession as the root of title in a different context.