The 1970 Washington quarter is a fascinating coin for collectors, especially due to certain rare errors that can significantly increase its value. Among these, a unique 1970-S proof quarter struck on a 1941 Canadian quarter planchet stands out, having fetched $35,000 at auction.
Understanding the 1970 Washington Quarter
The Washington Quarter, introduced in 1932 to commemorate George Washington’s 200th birthday, underwent significant changes by 1970. Originally composed of 90% silver, the Mint transitioned to a copper-nickel-clad composition in 1965. The 1970 quarters were minted in Philadelphia (no mint mark), Denver (‘D’ mint mark), and San Francisco (‘S’ mint mark for proof coins).
Key Specifications
| Feature | Specification |
|---|---|
| Composition | 91.67% Copper, 8.33% Nickel |
| Weight | 5.67 grams |
| Diameter | 24.3 mm |
| Edge | Reeded |
| Mint Marks | None (Philadelphia), ‘D’ (Denver), ‘S’ (San Francisco) |
The $35,000 Error: 1970-S Proof on a 1941 Canadian Quarter
The most notable and valuable error associated with the 1970 Washington Quarter is the 1970-S proof quarter struck on a 1941 Canadian quarter planchet. This unique minting error resulted in a coin that differs in composition and weight from standard 1970 quarters.
Identifying Features
- Planchet Composition: Unlike the standard copper-nickel composition, this error coin was struck on an 80% silver Canadian planchet.
- Weight: The coin weighs approximately 5.83 grams, slightly more than the standard 5.67 grams.
- Design Anomalies: Traces of the original 1941 Canadian quarter design may be visible under magnification, indicating the overstrike.
How to Spot This Rare Error
- Examine the Coin’s Weight: Use a precise scale to measure the coin’s weight. A standard 1970 quarter should weigh 5.67 grams. A weight significantly different from this could indicate an error.
- Inspect the Edge: The reeded edge of the coin may show inconsistencies or reveal a different metal composition, especially if struck on a silver planchet.
- Look for Design Traces: Under magnification, check for any remnants of the original 1941 Canadian quarter design, such as partial inscriptions or outlines.
- Seek Professional Authentication: If you suspect you have this rare error coin, consult a professional coin grading service for verification and appraisal.
Other Valuable 1970 Quarter Errors
While the 1970-S proof on a Canadian planchet is exceptionally rare, other errors from that year can also be valuable:
- Double Struck Errors: Coins that were struck more than once, resulting in overlapping designs.
- Clipped Planchets: Coins missing a portion due to a misfeed during the punching process.
- Off-Center Strikes: Coins that were not properly aligned during striking, leading to a partial design.
General Value of 1970 Quarters
| Coin Type | Approximate Value Range |
|---|---|
| Standard Circulated 1970 Quarter | Face value (~$0.25) |
| Uncirculated 1970 Quarter | $1 to $5 |
| 1970-S Proof Quarter | $5 to $10 |
| 1970 Error Coins | Varies; up to thousands of dollars depending on the error |
The 1970 Washington quarter holds a special place in numismatics due to its history and the potential for valuable errors. While finding a 1970-S proof quarter struck on a 1941 Canadian planchet is exceedingly rare, being aware of such anomalies can make coin collecting an exciting and potentially rewarding hobby.
FAQs
Are all 1970 quarters valuable?
No, standard 1970 quarters in circulated condition are typically worth their face value of 25 cents. However, uncirculated or proof versions, as well as those with mint errors, can be worth more.
How can I tell if my 1970 quarter is an error coin?
Look for anomalies such as unusual weight, off-center designs, missing elements, or signs of double striking. Consulting a professional numismatist can provide a definitive assessment.
What should I do if I find a potential error coin?
Have the coin authenticated and graded by a reputable coin grading service to determine its value and authenticity.
2 thoughts on “How to Spot the 1970 Washington Quarter Worth Over $7,000”
Yes, I have 2 1982 D Lincolnpenny.they weight 3.13. And looks like small #. Wanted to ask questions before I try to get them graded. Do I mail them to pgcs? How long does a grading take to get done? I guess I need to check a guy out here in Tx.first.
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