Quote:Comments: Shortly after the various obverse doubled die cent varieties were produced that year, the
Lincoln Cent master die for 1972 failed and a new one had to be produced. Clearly the Mint was having problems that year with the hubbing process as was evidenced by the many doubled die varieties produced. Those problems carried over to the second master die that was produced for the Lincoln cents that year. That second master die was produced with minor doubling. It is estimated that the doubled master die was created somewhere around April or May of 1972. All of the Lincoln cents struck by working dies that descended from the doubled master die show this minor doubling. The doubling can be seen on the letters of IGWT, the letters of LIBERTY, and very slightly on the date. Since 60% to 70% of all Lincoln cents for 1972 show this doubling, it is far too common to have any value. This includes 1972 D-Mint, S-Mint, and proof coins produced that year.