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At pro international on canadian coins.
Posted by: DanRedden
Date: May 04, 2018 01:57PM
Anyone use at pro international coin shooting on canadian coins. Mine seems to be all over the place on the vdi. Any pointers getting things fine tuned for newer canadian coins as far as settings. Thaks.

Re: At pro international on canadian coins.
Posted by: dan b
Date: May 04, 2018 11:54PM
Do you really want to find newer Canadian coins? If so, watch for targets that bounce from iron to mid 80’s. they are erratic, but consistent. After a while, you will be able to even tell if the are rusty from the scratchiness of the tone. Personally, if I want modern Canadian coins I would rather buy a coffee at Tim Hortons and pay with a 20. To me, it’s the older Canadian coins that are worth the effort.

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This Should Help!:thumbup:
Posted by: John-Edmonton
Date: May 05, 2018 12:03AM
Canadian coins are a real challenge :confused: to detect. The coinage is made by a variety of metals, and that is also dependent on their mintage year. We have coins made of silver, tombac, nickel, copper, zinc, nickel, steel and nickel plated steel. The duration of the coinage outside, both in and above the ground, can rust away some of the nickel coating and expose steel rust, or other oxides on the outside of the coinage. The tones on the AT Series help to identify the more rusted objects compared to good and partially rusted coinage. Using a concentric coil also helps to identify rusted bottle caps from coins. DD coils tent to read rusted bottle caps as good targets in the coin range.

US coins are a breeze!:bouncy: When that coil goes over a US dime or quarter, it bangs real hard and gives a proper ID. You guys are so lucky to have your coinage tweaked with most brands of metal detectors.


Over the last 25 years or so, I have been averaging about $500.00 in clad eachyear. :detecting:

Below is a description of how Garrett AT Series read Canadian Coins:

PENNIES

Older pennies, up to the middle 1990's will read in the penny icon, or with a VDI in the 80's. Now the newer strikes, can be made of metal or zinc plated with copper. These are harder to ID as pennies, especially when the copper coating begins to wear off. But, expect them to read as a steaduy VDI reading of 74 +/- about 2%. Others will read in the high 70's and lower 80's. The key is where the VDI numbers read MOST of the time. If you decider to NOT dig pennies for whatever reason, expect to miss some silver rings and 10K gold rings.


NICKLES

They usually give a softer sound with a VDI reading at 51 and remain there. Square pull tabs give a harsher sound and often times remain at 53. Gold is common in this area +/- 10% with a consistent softer tone.


DIMES

Older silver dimes, (pre 1968 ) or older will read as silver and read in the lower to mid 80's. However, if they are beyond about 6 inches in depth, they may start to read as junk. Use your common sense rule that if it is deep, it is probably old. Now freshly dropped dimes will read loud and allow the VDI numbers to bounce around the 60's to the 90's. With the IRON AUDIO turned on, they will grunt (low iron) and give a nice loud sound in the 80's -90's. Dig them, as they might also be a quarter. Older dimes tend to fluctuate in the 40's to 70's with the odd spike to the 80's.



Quarters

Pre 1968 quarters were silver and will read in the 80's consistantly. New fresh dropped quarters give a loud signal, with a VDI bouncing back and forth between 30's - 70's. You will eventually learn their distinctive audio. Older (not silver) quarters tend to bounce back and forth around the 70's to 80's. They also give off a loud signal.


Loonies

Give off a very loud audio bouncing back and forth 70's to the 80's.


Toonies

Give off a loud signal in the 70's and can sometimes give off a spike to the 90's.

Below are the results from a hunt last week.




Re: This Should Help!:thumbup:
Posted by: DanRedden
Date: May 09, 2018 06:38PM
Thank you for your reply. This will be very helpful next time I go coin shooting with my at pro international. Just getting started with it. Still using my ace 250 as my ole stand by. Just have to learn to be more confident with the at pro. Will come with time and use. Cheers! Happy Hunting!

Re: At pro international on canadian coins.
Posted by: dan b
Date: May 11, 2018 11:22AM
I found the ATPro better on Canadian clad than the Max. Not sure if John sees that too. I dug a ton of dimes with the ATPro. With the ATMax, I can't tell the difference between a deep dime and a shard of can slaw or foil.

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