Best Mode for :canadaflag: Clad Coins

[Sven]

Been doing some experimenting and have come to the conclusion to find the newer nickel plated steel composition clad coins, hunt in Deep mode.
Requires a bit slower sweep but the new junk coins will ID with a higher number and higher tone as the older compo coins in other modes. Other modes drop the new claddage into the iron junk range, along with a low tone, you would not dig these, unless you were fast enough to spot a high number flash by in a micro second amongst the low numbers.

 

[Monte]

For the US and Canada to combine our coinage productions, which would also make the USA take on some nice changes.

1st.. gets rid of the 1¢ coins like the folks up north. Bye bye to the deteriorating Zinc Cents.

2nd.. would produce $1 and $2 coins for the , but use the 2-metal piece concept of your Toonie, but NOT use any ferrous or magnetic metals in their production.

3rd would use our better metal alloy mix and make the Canadian 5¢, 10¢ and 25¢ coins so that they would NOT be ferrous/magnetic like they are today.

Then, we, down south, would get the benefit of finding lost Dollar and Two Dollar coins while getting rid of the Pennies, and you, up north, would have much better, longer-lasting, higher conductive Coins that would provide good, non-ferrous detection and tighter reading TIDs.

Just a thought.

Monte

 

[dfmike]

The pennies have just recently been completely canceled out but they are still the most abundant coins one can find. On the upside, no zinc here. They were all made out of copper until the last one was produced.

The toonie seems to have retained its original metal formulation since it has been created but not the loonie. I can find 1987-1991 loonies much more easily by tone and solid VDI than the newer ones. The more recent loonies don't look the same (a shiny yellow color as opposed to the golden-copper hue of the original ones) and are harder to find for me on any detector that I have. I can find them but the signal is more "iffy". Maybe the Impact fares better. I fear that sooner or later they will start producing loonies and toonies with ferrous cores.

What I don't like about the newer 5,10 and 25 cents is that their survival rate in the ground is severely impacted by that ferrous core. It's not rare to see one of these coins with rust patches coming out of the thin nickel plating after only a few years in the ground. I found a few from the 2000+ years that were hardly recognizable.

 

[Sven]

I have a bag of crusty corroded Can copper zinc pennies that the Coinstar machine refuses to accept. Magnet fishing can be productive......


In 1997, the penny's composition changed to 98.4 per cent zinc, with the rest copper plating. Since 2000, its composition has been 94 per cent steel.

Technical specifications

1908 - 1920
Composition: 95.5% copper, 3% tin, 1.5% zinc
Weight (g): 5.67
Diameter (mm): 25.4
Thickness (mm): n/a

1920 - 1941
Composition: 95.5% copper, 3% tin, 1.5% zinc
Weight (g): 3.24
Diameter (mm): 19.05
Thickness (mm): 1.65

1942 - 1977
Composition: 98% copper, 0.5% tin, 1.5% zinc
Weight (g): 3.24
Diameter (mm): 19.05
Thickness (mm): 1.65

1978 - 1979
Composition: 98% copper, 1.75% tin, 0.25% zinc
Weight (g): 3.24
Diameter (mm): 19.05
Thickness (mm): 1.52

1980 - 1981
Composition: 98% copper, 1.75% tin, 0.25% zinc
Weight (g): 2.8
Diameter (mm): 19
Thickness (mm): 1.45

1982 - 1996
Composition: 98% copper, 1.75% tin, 0.25% zinc
Weight (g): 2.5
Diameter (mm): 19.1
Thickness (mm): 1.45

1997 - 1999
Composition: 98.4% zinc, 1.6% copper plating
Weight (g): 2.25
Diameter (mm): 19.05
Thickness (mm): 1.45

2000 - present*
Composition: 94% steel, 1.5% nickel, 4.5% copper plating
Weight (g): 2.35
Diameter (mm): 19.05
Thickness (mm): 1.45

 

[dfmike]

Sven, you are right about the composition change. I should have checked my book before I posted. No wonder I hardly find the newer ones (2000+).

Now I understand why the CoRe gives me 82-83 or 85-86 on CAD pennies. The lower values are probably the copper plated zinc ones. Thanks for the info.