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Mint strike question for Walking Liberty Half Dollars

jesbrokenjesbroken Posts: 8,713 ✭✭✭✭✭

I have noticed on many 1937 S Walking Liberty Half Dollars this striation in the field next to Liberty. Exactly what part of the striking process causes this? Is it pressure related, or worn dies, new dies? Also, which book would you recommend that fully explains all the strike characteristics and their causes with photos?

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  • rickoricko Posts: 98,724 ✭✭✭✭✭

    I will defer to the experts here.... However, IMO, they look like die polish lines that perhaps removed a die clash. Cheers, RickO

  • bagofnickelsbagofnickels Posts: 318 ✭✭✭✭

    I dont know if you ever found the answer to your question but I too am seeking the same information...

  • clarkbar04clarkbar04 Posts: 4,895 ✭✭✭✭✭

    That is just metal flow caused by die fatigue IMO.

    MS66 taste on an MS63 budget.
  • BillJonesBillJones Posts: 33,043 ✭✭✭✭✭

    Addition to die fatigue, the San Francisco Mint seemed to have problems striking these coins in the late 1930s and ‘40s. Many dates are known to often come with design elements missing, like Ms. Liberty’s hand.

    Retired dealer and avid collector of U.S. type coins, 19th century presidential campaign medalets and selected medals. In recent years I have been working on a set of British coins - at least one coin from each king or queen who issued pieces that are collectible. I am also collecting at least one coin for each Roman emperor from Julius Caesar to ... ?
  • ThreeCentSilverFLThreeCentSilverFL Posts: 1,655 ✭✭✭✭✭

    Agree with @clarkbar04 and @BillJones metal flow from die deterioration. Many of mine from that era contain the same. Die polish lines are generally very thin or wispy and closely spaced in parallel.

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