Die clashed Canberra

[Unicorn]

Thanks Mark and my pleasure Echi, I love a good error.

[ausjack]

Excellent pic's Uni and RG :good:

[markn]

"Why doesn't the entire design transfer?", I hear you ask. Well, it would if the dies were absolutely perfectly aligned. But there is a tiny bit of leeway when dies are inserted into the press, and they may be sitting very slightly angled. You would never notice this on a coin (well, unless the angle was hugely off, but that's another matter). But even a tiny angle is enough for one part of the dies to clash and not another.

Dies often do not have their designs about a flat plane but along a slight convex dome, which is another reason you often see die clash on the center part of the die only.

[Fulvio]

Dies often do not have their designs about a flat plane but along a slight convex dome, which is another reason you often see die clash on the center part of the die only.

Production dies for circulating coins? Well, y'learn something new every day.

Some pics would be nice.

[r9453]

Production dies for circulating coins?

My understanding is that the dome helps to force the metal of the planchet evenly and radially towards the rim.

Some pics would be nice.

If you mean pics of the dome, that could be tricky since its very small, something of the order of a thousandth of an inch.

[markn]

Production dies for circulating coins?

My understanding is that the dome helps to force the metal of the planchet evenly and radially towards the rim.

Some pics would be nice.

If you mean pics of the dome, that could be tricky since its very small, something of the order of a thousandth of an inch.

Yep, what he said  It's the reason so called "die adjustment strikes" usually only show evidence of the striking in the center of the coin even though the areas of highest relief are often not in those regions.

[tonymac]

Bare with me guys I have one of these what are we looking at with regards a die clash, new to this

Do a little searching and you'll find several die clash threads. It happens fairly often.

Clashes occur when a press misfeeds and there is no planchet between the dies when they strike. The dies hit each other, and part of the design transfers. Because the design is cut into the die, so the high points on the coin are the low points on the die, it is protected from damage. The field, however, is the surface of the die, and so the edges of the design are the bits that transfer onto the opposing die's field.

"Why doesn't the entire design transfer?", I hear you ask. Well, it would if the dies were absolutely perfectly aligned. But there is a tiny bit of leeway when dies are inserted into the press, and they may be sitting very slightly angled. You would never notice this on a coin (well, unless the angle was hugely off, but that's another matter). But even a tiny angle is enough for one part of the dies to clash and not another.

Also, depending on the relative hardness of the two dies, the design may transfer onto one or both dies. The 5¢ I posted recently shows a clash on both sides for instance.

Thanks Fulvio the learning curve is becoming more of a slope

[Fulvio]

Thanks Fulvio the learning curve is becoming more of a slope

Awesome! Wait till it levels off with the odd bump here and there.

[trout]

From the images of echidna's and RG's coins I can assume that I won't have to search through any of my Canberra's with die cracks on the obverse as there are none on the 2 different coins posted.
I will also be able to overlook any coin under EF as the clash will be too hard to see properly so that leaves only about 80-100 to look through I think, Not sure.
I have just got home from driving about 800k's and I am buggered so I will start the search tomorrow and hope fully I may be able to find one of these clashed specimens :ok:

[robbiegal]

yep you might

i am not real big on the PH florin but have probably owned or sold about 100 - 140 of them over the years - so for me, my tally is about 1 in 100 - 140

[trout]

yep you might

i am not real big on the PH florin but have probably owned or sold about 100 - 140 of them over the years - so for me, my tally is about 1 in 100 - 140

But were you actually looking for this clash before
I spend so much time looking at the orbs, ear and other high points on these coins and only give the fields a cursory glance to look for hits, nicks, abrasions and lustre that I could have well overlooked this somewhat feint clash that I imagine will only be obvious looking at the coin from different angles and lighting. :ok:

[robbiegal]

nope,  i wasn't util i found one - hadn't seen the clash before
this one posted is only the second one that i have seen a photo of

[nealeffendi]

Is that the same die clash florin that finished a week or so on fleabay? I bid on that coin higher than the grade deserved because of the die clash (but didn't win as obviously others also saw the clash).

I just checked, yep it's the Monatarium Canberra ebay item 262591394638 that sold for $95

[trout]

I just finished looking through my coins, I even checked the slabbed ones, Nothing, Nada, Zilch

[trout]

I just looked through a couple of hundred "Culls" and Bingo I found three