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Is The Classic 3SL suppose to disc out a copper penny at max disc?
- Thread starter Ronk
- Start date
Hi,
Pennies from 1982 on have a composition of 97,5% zinc and 2,5% copper plating.
If the plating has worn off to any extent, there may be less than 1% copper present - the rest is zinc which is disced out at max. disc.
http://en.wikipedia.org/wiki/Penny_%28United_States_coin%29
scroll down to history of composition
Greetings
skookum
Pennies from 1982 on have a composition of 97,5% zinc and 2,5% copper plating.
If the plating has worn off to any extent, there may be less than 1% copper present - the rest is zinc which is disced out at max. disc.
http://en.wikipedia.org/wiki/Penny_%28United_States_coin%29
scroll down to history of composition
Greetings
skookum
reject some "copper pennies" at maximum Discrimination, but there's a reason.
Reason #1: There were two versions of the Classic III. The Classic III SL (slim-line w/8-AA batteries) was based on the former, boxier Coinmaster Classic III and Classic III Plus. These models did not adjust high enough in the Disc. level to reject most aluminum Screw Caps or modern Zinc pennies.
When the Classic IDX was about to be introduced, and it was based on the Classic III SL with the TID added, that performance 'blemish' was brought to their attention (again
;-) ) and they released the Classic IDX with the Disc. level range adjusted. Later, after Classic III SL circuit boards were caught up they included the fix so that the latter Classic III SL's DID adjust high enough to reject the Screw Caps or modern Zinc cents at about the 3-o'clock setting.
Reason #2: When we think of "copper pennies" that includes the metal makeup of most of the pennies made from the thin 1864 Indian Heads thru the Wheat-back era, and on through the Memorial cents up to the introduction of the Zinc cent in '82. If you look at the coin books they tell you that, with the exception of the WWII era pennies, they were made with 95% copper and the remaining 5% was tin, zinc or tin & zinc. But there's a problem and that has to be with either the source of the copper (purity) or the foundry processing to make the copper, because most Indian Head cents, and many early Wheat-Back cents from 1909 until about 1020 or some even a little later, do not have the higher conductivity of the latter "copper pennies.".
Generally, thoe Indian Head and early Wheat-back "copper" cents have a lower conductivity (VDI read-out) and fall more in the range similar to the Screw Cap to modern Zinc cents. Therefore, YES, you can reject some Copper pennies at maximum Disc. (or from 3-o'clock and up) on your Classic III's, if they are the latter version with the improved Disc. range.
Monte
Reason #1: There were two versions of the Classic III. The Classic III SL (slim-line w/8-AA batteries) was based on the former, boxier Coinmaster Classic III and Classic III Plus. These models did not adjust high enough in the Disc. level to reject most aluminum Screw Caps or modern Zinc pennies.
When the Classic IDX was about to be introduced, and it was based on the Classic III SL with the TID added, that performance 'blemish' was brought to their attention (again
;-) ) and they released the Classic IDX with the Disc. level range adjusted. Later, after Classic III SL circuit boards were caught up they included the fix so that the latter Classic III SL's DID adjust high enough to reject the Screw Caps or modern Zinc cents at about the 3-o'clock setting.Reason #2: When we think of "copper pennies" that includes the metal makeup of most of the pennies made from the thin 1864 Indian Heads thru the Wheat-back era, and on through the Memorial cents up to the introduction of the Zinc cent in '82. If you look at the coin books they tell you that, with the exception of the WWII era pennies, they were made with 95% copper and the remaining 5% was tin, zinc or tin & zinc. But there's a problem and that has to be with either the source of the copper (purity) or the foundry processing to make the copper, because most Indian Head cents, and many early Wheat-Back cents from 1909 until about 1020 or some even a little later, do not have the higher conductivity of the latter "copper pennies.".
Generally, thoe Indian Head and early Wheat-back "copper" cents have a lower conductivity (VDI read-out) and fall more in the range similar to the Screw Cap to modern Zinc cents. Therefore, YES, you can reject some Copper pennies at maximum Disc. (or from 3-o'clock and up) on your Classic III's, if they are the latter version with the improved Disc. range.
Monte