You have inherited a coin collection, and you need to figure out what to do with it. The collection might be a single album of pennies that someone assembled over forty years, or it might be a safe deposit box of silver dollars, or it might be three heavy boxes that you know nothing about except that the person who collected them cared about them. This piece is the triage: what to do first, what to learn before you sell, and which selling path makes sense for what you are holding.
The one thing you must not do
Do not clean the coins. Not with polish, not with a cloth, not with soap and water, not with a dip, not with anything. Cleaning a coin removes the original surface, and the original surface is most of what the coin’s condition grade sits on. A coin that looks dull or tarnished to you may look exactly right to a buyer, because the patina, what collectors call toning, developed naturally over decades and is part of the coin’s history. A cleaned coin is worth less than the same coin uncleaned, every time, and the damage cannot be undone.
This rule applies to every coin in the collection, not just the ones that look valuable. You do not yet know which ones are valuable, and the one that looks like a dirty old penny might be the one worth noticing.
The grading piece in this group covers why cleaning destroys what the grade depends on. If you want to understand the grading scale before you go further, start there.
Triage: sorting what you have
The first pass is not about value. It is about organization. Separate the collection into groups you can describe and research independently.
Coins in holders. If coins are in sealed hard-plastic slabs from services like PCGS or NGC, they have already been professionally graded. The label on the slab tells you the coin, the grade, and the certification number. These are the easiest to research and the most straightforward to sell, because the holder carries market trust that does the authentication and grading work for you.
Coins in albums or folders. Collector albums, the kind with cardboard holes sized for each date and mint mark in a series, tell you that the person who built the collection was working on a specific set. Note the series (Lincoln cents, Mercury dimes, Washington quarters, whatever the album says) and look for the holes that are filled versus the ones that are empty. The gaps tell you what the collector was missing, and the filled spots near the ends of difficult runs may be the pieces worth researching first.
Coins in flips, tubes, or rolls. Cardboard flips, plastic tubes, and original bank rolls are storage, not identification. The coins in them need to be identified individually. For common-date coins in tubes, a quick check for key dates and mint marks is the first step. For coins in flips, the flip may have a handwritten note from the collector identifying the coin, which saves you the identification step.
Loose coins, bags, and boxes. The least organized tier. These may include anything from foreign coins to tokens to items that are not coins at all. They need sorting before anything else can happen.
What to learn before you sell
Once you have the collection sorted into groups, you need a sense of what each group is before you decide how to sell it. You do not need to become a numismatist. You need to know enough to avoid selling something valuable for common-coin prices.
Silver and gold content. Many older U.S. coins contain silver: dimes, quarters, and half dollars dated 1964 and earlier are 90% silver. Half dollars from 1965 through 1970 are 40% silver. Silver dollars carry their own silver content. If the collection contains a quantity of these, the coins have a minimum value based on metal content alone, regardless of collectible value. Gold coins carry even higher intrinsic value. Knowing whether you are holding silver or gold sets the floor.
Key dates and mint marks. Every coin series has a handful of dates and mint marks that are scarce and command premiums far above the rest of the series. A 1909-S VDB Lincoln cent, a 1916-D Mercury dime, a 1932-D Washington quarter. These are the specific coins that separate a common-date collection worth its metal from a collection with standout pieces. A reference guide for the series, or a few minutes with a search engine, will show you which dates to check.
Professional grading. For coins that appear to be scarce, high-grade, or valuable, professional grading from PCGS or NGC puts the coin in a holder with a grade that the market trusts. The grading fee is a small fraction of the coin’s value for a coin that is genuinely worth grading, and the holder makes the coin easier to sell at a fair price. For common coins, the grading fee is not worth the return.
Selling paths
The collection as a whole may not sell best through a single channel. Different tiers of the collection fit different selling methods.
eBay, piece by piece. The highest-return path for coins that are individually identifiable and carry enough value to justify the listing work. You photograph the coin, describe it honestly, set a price based on sold comps, and sell it to a buyer who is specifically looking for that coin. eBay is where the deepest pool of coin buyers searches by date, mint mark, and grade, and for a coin that is worth the effort of an individual listing, the platform returns more than any other channel.
eBay, in lots. For common-date coins that are not individually worth listing, but that have more value as a collection than as metal, a lot is the honest middle ground. Twenty common-date Mercury dimes as one listing reaches a buyer who wants the type, without requiring twenty individual listings. The per-coin return is lower than individual sales, but the time-to-money is shorter, and the collection moves.
A local coin dealer. A dealer will look at the collection, make an offer, and pay you on the spot. The offer will be below what you could get on eBay, because the dealer needs margin and is taking the inventory risk. The advantage is speed and certainty: no listing, no waiting, no shipping, no returns. For a large common-date collection, or for a seller who does not want to do the work of individual eBay listings, a dealer is a legitimate path. Get offers from more than one dealer before accepting.
An auction house. For a collection that includes genuinely rare coins, a specialized numismatic auction house provides expertise, a targeted buyer pool, and the kind of competitive bidding that can push prices above what a Buy It Now listing would achieve. The auction house charges a commission, and the timeline is longer, but for the right pieces the result justifies both.
The metal path. For coins with no collectible premium above their metal content, selling them as bullion is the fastest way to convert them to cash. A precious metals dealer pays close to the spot price for silver and gold, with a spread that is their margin. This path does not apply to coins with collectible value, only to common coins whose entire worth is the metal in them.
How to avoid the common mistakes
Do not sell the whole collection to the first person who offers. A collection assembled over decades may have individual pieces that are worth more than the offer on the whole lot. Take the time to sort, identify the standout pieces, and sell them through the channel that returns the most before dealing with the remainder.
Do not price from asking prices. Price from sold listings, not from what sellers are asking. The coin that is listed at a high price and sits unsold for months is not a comp. The coin that actually sold is.
Do not assume the collection is all common. Coin collectors often had pieces they were proud of mixed in with the rest. The silver dollar in the velvet box might be common, or it might be a key date. The album that looks ordinary might have one hole filled with a coin the collector spent years finding. Sort before you sell.
Do not rush. An inherited collection has waited this long. It will wait a few more weeks while you sort, research, and choose the right selling path for each tier. The time you spend in triage pays for itself in the price you get.
What carries over
An inherited coin collection sells best when you sort it into tiers, learn enough about each tier to know what you have, and match each tier to the selling channel that fits. The high-value pieces sell individually on eBay or through a numismatic auction house. The mid-range pieces sell in lots or to a dealer. The common coins sell for their metal value. The first step in all cases is the same: sort, do not clean, and learn enough to avoid giving away the pieces that the collector spent a lifetime assembling.
Grading literacy, the Sheldon scale, and what each grade range means are covered in the grading piece in this group. How to price from eBay sold listings is covered in the pricing piece. Both are worth reading before you list the first coin.