TID numbers for Aussie coins.

[Mick in Dubbo]

The following numbers are for Aussie coins for an X-Terra 70. They were down via air tests at 3 inches, in mode 1 and factory presets with the standard coil.
5 cents= 8
10 cents= 12
20 cents=20
50 cents=24
Silver round 50 cents=44
$1 = 32
$2 =30. They can on occasion bounce down to 28, but will bounce back.
1 cent= They tend to an even bounce between 34 and 36.
2 cents= Either 38 or 40 or can bounce between the two.

Pre-decimal coins.
Half penny George V=32 but did often bounce to 34.
Half penny after 1936 = 38.
Penny = 42.
Half silver (post 1945)
Three pence = 22
Six pence = 30 with occasional bounce to 32.
Shilling =32.
Florin = 38.
Full silver (pre 1945)
Three pence = 34.
Six pence = 38.
Florin = 44.
Gold Sovereign = 26.
While this list is not complete as far as pre-decimals go, they are what I have and are able to give numbers of.
Happy hunting all.
Mick Evans.

 

[rowdy]

Thanks for that mate. Will make my learning experience a bit easier.

cheers

rowdy

 

[Digger]

I appreciate your providing the information and have placed a link to your post in the FAQFAQ section. I did notice that the readings you provided (of "flat coins", without adjacent targets or the effects of mineralization) did not "bounce" by more than one notch segment. Thanks again. HH Randy

 

[Mick in Dubbo]

You're welcome.
The half pennies were a real enigma. They are all the same size and made of exactly the same stuff, yet the King George V coins (our first Aussie minted pennies 1911 to 1936) came up as 32. They did seem to have a crisper sound if knocked or dropped, so I can only conclude that in the process of manufacture, they may have been hardened, but I'm clueless as to why that may cause them to read lower. The King George V1 coins did do some very erratic bouncing from 38 to 44, but after playing around with them for a while, I found that their normal response was to lock in on the said numbers. All the half pennies and pennies are 97% copper, 2.5% zinc and 0.5% tin.
Yes all coins were flat to the coil @ 3 inches tested on a wooden book shelf with no metal present. The only thing I didn't do was a ground balance or have the tracking on, but the responses were what I find in the field.
As an interesting aside; While posting last night, there was a news story come on that showed a new Aussie $1 coin being minted, celebrating a 100 years of Australian minted coins. My wife also showed me another newly minted $1 coin celebrating a 100 years of the aged pension. it looked pretty good too.
Mick Evans.

 

[doctor11]

Thanks Mick, your post helps me heaps to learn the machine. 300mm of rain over-nite on the first in Townsville with king tides so the beaches are giving up intresting things.
All the mulch and can pulls are gone from the parks as a bonus ,hope to find a worthy post this week.
Mark Pollard

 

[Mick in Dubbo]

Sounds like a great time to be detecting up there. A lot of new targets will be open.
Ironically, we had about the same amount of rain here and it's caused work to shut down for a week. I guess I'll just have to go 'tecting.
Mick Evans.

 

[Terra1959]

Thanks Mick.

Very helpful.
For some reason I can find lots of threepence but hardly ever a sixpence ( only ever found 2 )
Happy days to you mate.

T59

 

[Furious T]

Mick, you've done a great job with the numbers....I agree with you on the halfpennies...quite varied in their responses, and not just on the X Terra. I've sometimes had a 2c come in at 42, but basically my experiences support your findings. Very good of you to take the time to post the info.

 

[Mick in Dubbo]

Yeah, I've found a bit of the same. My finds of either one is rare though. I'm real happy to snag either one.
Mick Evans.

 

[Mick in Dubbo]

Thanks Furious.
There was also a slight difference between the GeorgeV1 and Elizabeth II half pennies too. One of them seemed to like showing up in 40, but for the sake of the exercise, they all locked in at said place mostly, so I left it as I did. Don't want to cunfuse folks.
Mick Evans.

 

[fantomv]

pennys pre 36 come up as a 36 also with ones after that coming up at 42, also i have had early 3 pences with higher silver content pre early 30s come up at 36 and 40

heres a few english coins that i have found and english half penny comes up as a 30 and a full penny 34-36

 

[Mick in Dubbo]

Thanks Fantomv.
I wonder what the go is with those early coins. I haven't dug very many of them (I'm mostly a modern coin hunter) They seem to have a more pure ching when you tap/drop them I'd love to pull up the odd English coin. Found a couple of modern English ones a couple of weeks ago, but non of the early stuff.
Mick Evans.