Excellent images, especially for a proof. Do you think your example is Cameo (lite "frosting" on all devices)?
I see the secondary building corner by the initials and agree it is some form of die doubling. IMHO, the strike is way too sharp and clear to be from die maintenance. Because there is still some decent frosting of the devices this seems like an MEDS or EMDS coin.
I've only found a few proof varieties myself so I can't add anything definitive to your question TB, but agree that there are many years where there is a combination of classes of doubling. Your images make a good case for both classes of doubling on this coin.
doubleddies.com does list master die doubling for the Obv. of 1960, with lite separation on the lower part of IGWT, but none for the reverse.
WDDO-0022 does show doubling on top of the building base like yours exhibits, without the thickness on the initials. (Scroll to the bottom of the page.)
http://doubleddie.com/305001.html
I saved this link you(I think) posted for master die doubling at Lincoln Cents Online and it does list Master die doubling for 1960 but the links for individual years aren't working for me so I'm not sure if yours might be that.
Lincoln Cents Online Link-
http://lincolncentsonline.com/maste...oubling.html
I see the secondary building corner by the initials and agree it is some form of die doubling. IMHO, the strike is way too sharp and clear to be from die maintenance. Because there is still some decent frosting of the devices this seems like an MEDS or EMDS coin.
I've only found a few proof varieties myself so I can't add anything definitive to your question TB, but agree that there are many years where there is a combination of classes of doubling. Your images make a good case for both classes of doubling on this coin.
doubleddies.com does list master die doubling for the Obv. of 1960, with lite separation on the lower part of IGWT, but none for the reverse.
WDDO-0022 does show doubling on top of the building base like yours exhibits, without the thickness on the initials. (Scroll to the bottom of the page.)
http://doubleddie.com/305001.html
I saved this link you(I think) posted for master die doubling at Lincoln Cents Online and it does list Master die doubling for 1960 but the links for individual years aren't working for me so I'm not sure if yours might be that.
Lincoln Cents Online Link-
http://lincolncentsonline.com/maste...oubling.html
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