How Much Is a 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA Worth?
Based on 1 independent scans and 43 recent sold comparables, a 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA is typically worth around $55. Recent sold prices ranged from $4 to $1699 with a median of $59.
Get a value for your specific condition in 30 seconds
More listings of this item
Images from current eBay listings of this item.
Sold Range
$4.00 – $1,699.00
43 recent sales
Sold Median
$59.00
Realistic sale price
Asking (Active)
$10.00
25 live listings
AI Estimate
$55.00
Avg of 1 scans
Market Insight
Live listings are priced below recent sold prices ($10 asking vs $59 sold median) — sellers may be undercutting. Time-sensitive demand can let you price above current asking.
Recent Sold Comparables
What this item has actually sold for, pulled from public completed listings.
| Title | Sold |
|---|---|
| 1999 S Proof Delaware State Quarter - Clad - Nice Toning - Lot B | $4.24 |
| 1999 S Clad State Deep Cameo Gem Proof Quarter Set No Box/COA | $8.99 |
| 1999 S United States Mint Proof Set including the 5 State Quarters in Box w/COA | $8.00 |
| 1999-S United States Mint 9 Coin Proof Set, with Quarters, In OGP w/ COA (Y) | $12.99 |
| 1999 US Mint Proof Set 5 State Quarters Kennedy Dime Nickel Penny DE PA NJ CT GA | $61.60 |
| 1999-2009 S Complete State Quarter and DC Territories 56 Clad Proof Coin Set | $55.00 |
Get a Value for Your Specific Item
This page shows market data for 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA in general. Your item's actual value depends on condition, completeness, and current demand — scan it to get a specific number.
1. Snap a Photo
Just point your phone at the item — no typing.
2. AI Identifies It
Maker, model, era, and condition assessed in seconds.
3. See Real Prices
Sold comps + asking range from eBay, Poshmark, Mercari, etc.
Frequently Asked Questions
How much is a 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA worth?
Based on 43 recent sold listings, a 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA typically sells for $4 to $1699 with a median of $59. The exact value depends on condition, completeness, and current market demand. Run a fresh scan for instant pricing on your specific item.
Where do these prices come from?
Sold prices come from completed listings on eBay, Poshmark, Mercari, Facebook Marketplace, and Etsy — actual sales, not asking prices. Active asking prices are pulled from live listings. We re-aggregate this data continuously as new scans come in.
Why do listing prices differ from sold prices?
Sellers commonly list above what items realistically sell for. The gap between "asking" and "sold" is the most important number to look at — pricing in line with the sold median moves your item; pricing at the asking ceiling means it sits.
Aggregated from 1 independent AI scans and 43 recent completed listings across eBay, Poshmark, Mercari, Facebook Marketplace, and Etsy. Re-aggregated daily. Last refreshed June 15, 2026.
Get a Real Value for Your 1999 US Mint 50 State Quarters Proof Set (5 Coins, Clad) with Box & COA
AI-powered valuation backed by real sold data. Plans start at $5/mo.
Start Scanning