The , a 25 BTC physical coin issued by Casascius in 2011 realized $1,698,750 at GreatCollections on Sunday, after over 100 bids were received. Total sales for the single day of auctions exceeded $5.25 million.

The physical Bitcoin, graded MS-67 by PCGS, attracted the attention of over 200 bidders who were actively tracking the auction, with over 10,000 page views. The final price represented a $49,700 premium over the price of Bitcoin at the time that bidding ended.

The 25-Bitcoin was graded by PCGS alongside the holy grail of crypto physical coins - the , a one-ounce gold Casascius coin with 1,000 Bitcoin, or BTC. The current value of the exceeds $60 million and is by far the most valuable coin in the world, despite being issued only 10 years ago by a private company.

Casascius, the company created by Mike Caldwell, issued physical bitcoins from 2011 to 2013 in various denominations from 0.1 BTC to 1,000 BTC (the ). Over 800 of the 25 BTC denomination coins were produced, and less than half of that remain unredeemed.

Ian Russell, president of GreatCollections said:

It was the second most valuable coin GreatCollections auctioned this year. The finest 1893-S Morgan silver dollar realized $2,024,024 in August - an all-time world record for a Morgan dollar. Also in August, GreatCollections reported being the winning bidder for three of the most valuable U.S. coins to ever appear in auction for over $21 million - the finest 1804 silver dollar, the tied-for-finest 1794 silver dollar, and finest of two known 1861 Paquet gold double eagles.

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Casascius Bitcoin sells for $1.69 million at GreatCollections(http://news.coinupdate.com/casascius-bitcoin-sells-for-1-69-million-at-greatcollections/)