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Replies: 21 / Views: 1,853 |
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Pillar of the Community
United States
1501 Posts |
Very cool pickup @dearborn. Price seems quite reasonable. Good luck keeping the zinc rot at bay!
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Moderator
  United States
97435 Posts |
Quote: Good luck keeping the zinc rot at bay! Yeah thanks - not quite sure what I'll do about that issue. But for now it looks pretty clean.
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Bedrock of the Community
United States
62064 Posts |
The Cutting into blanks, The setup to make it into a planchet, the plating is the third step in the process. Seems like this should have been noticed somewhere along the line?  Makes me wonder it if was taken from the outside source that makes the source coins?
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Moderator
  United States
97435 Posts |
Quote: Makes me wonder it if was taken from the outside source that makes the source coins? good point Coop. I'm glad I managed to get it for my collection.
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Bedrock of the Community
Australia
21788 Posts |
Blanks are much scarcer than unstruck planchets.
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Pillar of the Community
Canada
6244 Posts |
Nice. 2.43 gr seem perfect in parameters. Can you measure again the diameter? Is suppose to be 18.75 mm. You are correct about the Mint: blank, upsetting, annealing and the plating and strike. I like, me I have only 2, not zinc. One 1967 (was in the UN set) and one from a roll also Type I. Very nice. I have no idea of the prices of those.
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Moderator
  United States
97435 Posts |
Here ya go Sil: 
Edited by Dearborn 08/28/2022 2:16 pm
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Pillar of the Community
Canada
6244 Posts |
@Dear: When you use this caliper, you let down the coin and you use the meddle of the caliper's arms. the tips are for other kind of measurements. Your blank I see it is 17 mm in diameter. How you take show 16 mm. At this dimension it is legitim. Do not forgot, when strike, the planchet expand from center to the sides.
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Moderator
  United States
97435 Posts |
@ Sil: I think you looked at my calipers incorrectly (as I have from time to time) My blank measures 18.8mm not 15 or 16. That is just the end of the slide part of the caliber. Now my blank is about .2 mm smaller than a finished cent. You need to remember that when the blank is upset it will be reduced in diameter in order to form the proto rims, then it will expand again in the collar at the time of striking to achieve the final size of about 19mm.  Edit: My calipers measure the same from the center down to the points. So my first measurement was also correct.
Edited by Dearborn 08/28/2022 7:49 pm
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Moderator
  United States
97435 Posts |
here is my caliper showing a zero measurement: 
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Pillar of the Community
Canada
6244 Posts |
@Dear, sorry I wrote and not up-load and lost, Bingo. No you are correct. The correct number is 18.xx. I say xx because you see which line is perfect on the second rule. In any case your coin is legitim for me from all point of view, and is the first blank outside the Mint to see un-plated. To preserve: in in Air tide or an seal sonic slab nothing will happened and can keep hundreds of years. Zinc need humidity and air flow to corrode. The sun light and high UV like the machine for stamps can change the color but not to corrode. IMO the price you pay is correct, reflect more the market and what a collector will pay like Dr. Shawn say in his reflections for the prices establish by TPG or some catalogs editors. This is nice catch.
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Moderator
  United States
97435 Posts |
Thanks Sil. This blank may not be worth the cost of slabbing, but I may do just that to keep the zinc rot at bay.
Edited by Dearborn 08/29/2022 08:45 am
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Pillar of the Community
 United States
8786 Posts |
Very cool acquisition, Dearborn and the price was definitely right!
-makecents-
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Moderator
  United States
97435 Posts |
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Pillar of the Community
Canada
6244 Posts |
PM me and I will send you a slab.
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Replies: 21 / Views: 1,853 |
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