Thanks Burton ! :D So I presume you are suggesting that the thickness might even be thinner than 0.0004". Compare that to the average size of...
Converting microns to inches : 10.18 microns /25400 = 0.0004007874 inches ToddB67
For the mathematically challenged: +/-5 micron = +/- 0.0002 inch variance For your future reference, here's how I arrived at that. (a) 1/25.4 =...
Kirkuleez, You get my vote ! My question finally has closure ! :happy: I found a source with high credentials that agrees with your answer of 20...
desertgem, Thanks for your reply. :D I guess the gov. could have expressed the amount of final plating as a percentage of the total 2.5g weight,...
Thanks for that interesting information Burton ! ;) However, as you know, I am looking for the thickness of the final plating in any convertible...
paddyman98......To me, the thickness of the final plating is just as important, and should be as much a part of the specifications for a coin, as...
Thanks Conder101 ! "Ten-thousandths" have four digits to the right, after the decimal point. In decimals your answer would be expressed 0.0001 -...
Kirkuleez......Not much help ! Neither site gives a straight forward answer. The one presents extensive laboratory-type tests and experiments for...
Kirkuleez, That's correct ! Rounded four places to the right of the decimal would be .0008" or eight-ten-thousandths. One micron = .000039 inch....
Thanks Kirkuleez ! After searching far and wide on the Internet, I couldn't find a credible source giving that specification. :( As I collect...
Thanks for checking in here ! Where can I find out, or does anyone know for sure, what the thickness is of the final pure copper plating on U.S....
tommyc03, Sorry:sorry:, I made a mistake in my reply to you, i.e. "Yes, the assumption in your second paragraph is correct and I'll refer to the...
BooksB4Coins, The "Grade List" I refer to in post #1 is the list of coin grades like G4, VG-8, F-12 and on up to MS-65, including definitions....
cpm9ball, Thanks for your reply ! Yes, the assumption in your second paragraph is correct and I'll refer to the black header you mentioned for...
Greetings Coin Aficionados ! :) My 2013, 66th Edition Red Book has no Grade List for Lincoln Memorial, Bicentennial or Shield Small Cents....
Male, Age 75, now living in Georgetown, Ohio
Insider, Over the years my science-oriented hobbies have ranged from Electrical appliance repairs, installing circuits and fixtures in my home...
vintagemintage, Most other members who replied to this thread had their fun with me and that's OK, but if one of them had just given me your...
Hi vintagemintage ! In reply to your last statement above, what exactly has the composition been for the "Westward Journey" Nickels since 1866 ?...
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