Rarity:
Unique

Known examples:
1. NGC MS-64.  Owned (as of March 5, 2001) by Bill and Barbara Clark of Sequoia Numismatics in Berlin, New Jersey.  

An NGC MS-64 example of this mule (#1615815-001) was offered in November 2001 for $47,500.  It is not clear whether (or not) this was the same coin listed above.

Images courtesy of 

Notes:
This unique mule combines the obverse of a 1995 Lincoln Head Cent with the reverse of a Roosevelt Dime on a Copper-Nickel Clad Dime planchet.  The edges are fully reeded but the coin is weakly struck on IN GOD WE TRUST, the L of LIBERTY and the word OF (on the reverse).

Sources and/or recommended reading:
Coin World, March 5, 2001, pages 1 and 117

"Dime-cent mule up for sale", Numismatic News, page 34