To read the complete article, see:
This Quarter May Be Worth Much More Than You Think (www.yahoo.com/news/quarter-may-worth-much-more-175047736.html)

CLAIM: A handful of 1970s quarters are worth a fortune, as they were minted on the back of a 1941 Canadian coin.

MIXTURE

WHAT'S TRUE: A 1970-s proof quarter struck on the back of a 1941 Canadian coin was listed on eBay for $35,000.

WHAT'S FALSE: The coin did not enter circulation.

EXAMPLE: [Collected via e-mail, June 2016]

ORIGIN:An article published on Woman's World on 31 May 2016 described a rare U.S. quarter from 1970 that was purportedly minted by accident on the back of a Canadian coin:

The article quoted above is based on an eBay listing for a "1970-S Proof Washington Quarter Struck on 1941 Canada Quarter NGC PF 65." The coin is currently listed by Mike Byers, Inc. for USD$35,000.

According to the eBay listing, Byers obtained this rare coin from a California state auction:

While Byers has a long history of buying and selling mint error coins, many appeared skeptical about this eBay listing, largely because there seems to be no practical reason that a 1970 United States quarter would be minted in the same place as a 1941 Canada quarter. While third-party coin certification company Numismatic Guaranty Corporation couldn't provide the reason the coin was created, they did confirm to us that it was legitimate

Lee Bowers noted:

To read the complete Snopes article, see:
Coinstruck (www.snopes.com/1970-quarter-ebay-canada/)

To read the complete MSN article, see: Rare batch of 1970 quarters worth much more than 25 cents (www.msn.com/en-us/money/markets/rare-batch-of-1970-quarters-worth-much-more-than-25-cents/ar-AAgPLg3?li=BBnb7Kz)

To read the complete Daily Mail article, see: Is your quarter worth $35,000? Rare 1970 proof coin containing faint trace of the year '1941' goes on sale... but you'll need to be very 'eagle'-eyed to spot minting error (www.dailymail.co.uk/news/article-3633476/Is-quarter-worth-35-000-Rare-1970-proof-coin-containing-faint-trace-year-1941-goes-sale.html)

To read the complete eBay description, see:
1970-S Proof Washington Quarter Struck on 1941 Canada Quarter NGC PF 65 (www.ebay.com/itm/1970-S-Proof-Washington-Quarter-Struck-on-1941-Canada-Quarter-NGC-PF-65-/272270412047?)