Coin wrapped in foil still gave a signal

[GKMan]

I made it out this morning to a place I have previously detected with the E-trac but this morning I was trying a different part of the property. I found two Mercury dimes and silver Roosevelt along with numerous deeper Wheat cents and shallow clad. One Mercury had an iffy signal but I dug it anyway, and the first thing that popped out was about an inch of threaded bolt and then the dime (see photo) Afterwards I got an alright 12-40 signal at about six inches and dug it thinking a penny again but lo and behold out popped a piece of foil wrapper which surprised me, but inside of that foil wrapper was a 1969 memorial cent in decent shape, I can not believe I found the coin wrapped inside foil.

 

[Erik in NJ]

n/t

 

[mudpuppy]

Nice job on the silver...and yeah, thats pretty cool about the coin in foil too...a guy just never knows what adventure awaits once he gets out of the house!
Mud

 

[texasranger]

I made it out this morning to a place I have previously detected with the E-trac but this morning I was trying a different part of the property. I found two Mercury dimes and silver Roosevelt along with numerous deeper Wheat cents and shallow clad. One Mercury had an iffy signal but I dug it anyway, and the first thing that popped out was about an inch of threaded bolt and then the dime (see photo) [size=x-large]Afterwards I got an alright 12-40 signal at about six inches and dug it thinking a penny again but lo and behold out popped a piece of foil wrapper which surprised me, but inside of that foil wrapper was a 1969 memorial cent in decent shape, I can not believe I found the coin wrapped inside foil[/size].

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hello Gary,

What you observed is a classic example of the 'multi-frequencies' at work, present in the FBS pulsed transmission.

In this case, the 'thin' foil surrounding the 'thicker' coin, would offer little 'shielding' to the 'fundamental' and adjacent low frequency harmonics (1st and 3rd) contained in the CTX 3030 TX pulse-train.

Hence, the 'low-frequencies' and relatively larger share of the harmonic TX power, would easily get through the six inches of soil and few thou.inch of foil, to produce the 40 conductivity reading.

All part of the 'magic' that drives the Minelab FBS...........TEX

 

[GKMan]

It's a beautiful thing!

 

[GKMan]

Here is a video of the foil wrapped penny find
https://www.youtube.com/watch?v=7EVGDhs5dd4&feature=youtube_gdata_player

 

[Big Boys Hobbies]

Amazing! The new FBS 2 coil really is a big step forward in discrimination.

 

[Buried Crap NJ]

Ok Why am the only one thus far not to find this amazing? I dig cake tray foil very much like what I am seeing here, without a coin. I also dig foil top juice lids that sound great. I also dig rolled up aluminum foil in both small balls and larger ones. I dig can slaw that sounds good.Isn't foil Non ferous and then it would show up as a target? Am I missing something?
BCNJ

 

[GKMan]

I still have the piece of foil I will see what it comes up at on its own

 

[Buried Crap NJ]

I still have the piece of foil I will see what it comes up at on its own

Thanks you can't believe the crap I bring home. But also remember that we beach hunters choose to dig everything do the nature of the hunting grounds. Not having to worry about lawns! So that might just be it. If I were to have to recover a target that was iffy in dirt conditions,I might discriminate better by ear and TDI.
BCNJ

 

[earthmansurfer]

Ok Why am the only one thus far not to find this amazing? I dig cake tray foil very much like what I am seeing here, without a coin. I also dig foil top juice lids that sound great. I also dig rolled up aluminum foil in both small balls and larger ones. I dig can slaw that sounds good.Isn't foil Non ferous and then it would show up as a target? Am I missing something?
BCNJ

I actually think any machine will pick up a coin that is tightly wrapped in foil. Foil is thin and when tightly wrapped like that I would imagine that the eddy currents being created are mostly coming from the coin as it makes up more of the now near solid mass. Sort of like how a gold plated metal object will read as the base metal and not the plating. There was a talk on another site on this same thing and from recollection, that is what was mentioned but Don't quote me on it.

Albert

 

[kochevar]

What I want to know is why do people wrap pennys in foil?? I have found a half dozen of them in the last few years, mostly at the same beach. This year I even found 2 pennys together wrap in foil. Any body know anything as what gives here?

 

[Buried Crap NJ]

Ok Why am the only one thus far not to find this amazing? I dig cake tray foil very much like what I am seeing here, without a coin. I also dig foil top juice lids that sound great. I also dig rolled up aluminum foil in both small balls and larger ones. I dig can slaw that sounds good.Isn't foil Non ferous and then it would show up as a target? Am I missing something?
BCNJ

I actually think any machine will pick up a coin that is tightly wrapped in foil. Foil is thin and when tightly wrapped like that I would imagine that the eddy currents being created are mostly coming from the coin as it makes up more of the now near solid mass. Sort of like how a gold plated metal object will read as the base metal and not the plating. There was a talk on another site on this same thing and from recollection, that is what was mentioned but Don't quote me on it.

Albert

That's my point too! The last line in the original post said I can't believe I found a coin wrapped in foil. I saying what your saying. Why not? There both non ferrous metals!
BCNJ

 

[GKMan]

I guess I should have said I can't believe a coin wrapped in foil would still id at 12 40

 

[C&RHunter]

What I want to know is why do people wrap pennys in foil?? I have found a half dozen of them in the last few years, mostly at the same beach. This year I even found 2 pennys together wrap in foil. Any body know anything as what gives here?

Maybe the people that wrap those pennies are just trying to mess with the detector guys, for their entertainment........HH

 

[GKMan]

I think they do it with burying treasure in mind.

 

[Buried Crap NJ]

Now that makes more sence to me. I just did not understand the first post. I amgood now. LOL!
BCNJ

 

[nick777]

Maybe there's a food stand nearby and they throw the change on the foil with the food. People eat the food and leave the penny on the foil, which gets wound up as it gets buried?