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Re: Heat Treatment of Coin Dies
Without knowing the chemical composition of the dies, I don’t think there’s a way to be certain what the hardness is/was. The below link has a different version of the TTT diagram (Figure 8, on p. 11… (View Post)1 -
Heat Treatment of Coin Dies
One of the beneficial attributes of steel is that it can be heat treated in numerous ways to get a wide variety of properties for many different end applications. One of these applications are the di… (View Post)27 -
Re: 1820 B-1 Bust Quarter G-T-C : 200 Year Anniversary
The fact that there are 12 currently listed on eBay tells me that there’s no way (in my opinion) that B-1 is R5-, since it would mean that 1/5 to 1/6 of the entire population is currently available f… (View Post)1 -
Re: 1820 B-1 Bust Quarter G-T-C : 200 Year Anniversary
I recognize that I’m bumping an older thread, but it’s still 2020 so I’ll go for it. This 1820 B-1 arrived this weekend, and it looks very nice and original in hand. It’s graded G6 by PCGS. I’m still… (View Post)2 -
Re: DELETE
Here are some of my favorite bust quarter acquisitions from this year: (View Post)9