I have this list of Master Die Doubling that goes from the 30's until 1979. If we can make a sticky out of it, then please do!
MASTER DIE DOUBLING
1932: (P,D) Underneath the upper part of the 32 of the date.
1935: (P,D,S) Inside the lower portion of the 5 of the date.
1937: MMD on the top of the 7 of the date.
1937: MMD on IN GOD WE TRUST, eye and the right side of 937.
1938: (P,D,S) Doubling inside the lower loop and on the bottom of the 8.
1938: (P,D,S) Doubling of the 8 in date.
1940: MDD of the 40 of the date.
1944: MDD on the last two 4's of the date.
1946: (P,D,S) Doubling on nose, lips, chin, throat, chest and bow tie.
1948: (P,D,S) Light extra thickness on all lettering and date, especially in TRUST.
1952: MDD on the date.
1955: (P,D,S) Master die damage caused doubling in the upper 'BE' of LIBERTY
1955: (P,D,S) Doubling on lower LIBERTY.
1957: MDD on GOD
.
1957: (P,D,Pr) MDD on 'D WE' of GOD WE.
1958: (P,D) MDD on the upper left part of the 8
1960: MDD on the 'E' of WE (lg date).
1960: (P,D,Pr) IN GOD WE TRUST. (Small date)
1961: (P,D,Pr) IN GOD WE TRUST and date.
1962: (Pr) On date.
1964: MDD on the crosslet of the 4 of the date
1965: The 5 of the date has a notch in the center where the curve meets the upright.
1970: (P,D,S) Extra bar under L of LIBERTY and over 7 of date.***Currently not considered MDD
1970: (P,D,S) Extra bar over 7 of date. .***Currently not considered MDD
1970: (P,D,S) Below horizontal cross bar of 7 and below 0 of date. .***Currently not considered MDD
1970: (P,D,S) Extra bar above 'L' of LIBERTY. .***Currently not considered MDD
1972: (P,D,S,Pr) LIBERTY, IN GOD WE TRUST and 2 of the date.
1973: The center of the 3 of the date shows a split.
1974: Two different date sizes for this year. Large date and Small date.
1979D: The lower corner broke off the mint mark punch showing a split serif
MASTER DIE DOUBLING
1932: (P,D) Underneath the upper part of the 32 of the date.
1935: (P,D,S) Inside the lower portion of the 5 of the date.
1937: MMD on the top of the 7 of the date.
1937: MMD on IN GOD WE TRUST, eye and the right side of 937.
1938: (P,D,S) Doubling inside the lower loop and on the bottom of the 8.
1938: (P,D,S) Doubling of the 8 in date.
1940: MDD of the 40 of the date.
1944: MDD on the last two 4's of the date.
1946: (P,D,S) Doubling on nose, lips, chin, throat, chest and bow tie.
1948: (P,D,S) Light extra thickness on all lettering and date, especially in TRUST.
1952: MDD on the date.
1955: (P,D,S) Master die damage caused doubling in the upper 'BE' of LIBERTY
1955: (P,D,S) Doubling on lower LIBERTY.
1957: MDD on GOD
.
1957: (P,D,Pr) MDD on 'D WE' of GOD WE.
1958: (P,D) MDD on the upper left part of the 8
1960: MDD on the 'E' of WE (lg date).
1960: (P,D,Pr) IN GOD WE TRUST. (Small date)
1961: (P,D,Pr) IN GOD WE TRUST and date.
1962: (Pr) On date.
1964: MDD on the crosslet of the 4 of the date
1965: The 5 of the date has a notch in the center where the curve meets the upright.
1970: (P,D,S) Extra bar under L of LIBERTY and over 7 of date.***Currently not considered MDD
1970: (P,D,S) Extra bar over 7 of date. .***Currently not considered MDD
1970: (P,D,S) Below horizontal cross bar of 7 and below 0 of date. .***Currently not considered MDD
1970: (P,D,S) Extra bar above 'L' of LIBERTY. .***Currently not considered MDD
1972: (P,D,S,Pr) LIBERTY, IN GOD WE TRUST and 2 of the date.
1973: The center of the 3 of the date shows a split.
1974: Two different date sizes for this year. Large date and Small date.
1979D: The lower corner broke off the mint mark punch showing a split serif
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