gxseries Posted July 7, 2005 Report Share Posted July 7, 2005 I have NEVER seen anything like this until I came across this auction page: German Gold Coins Hoard Yes, there is a hoard of gold German coins, but there are two interesting gold coins there. How often do you see shattered coins?! I mean, if coins are metallic, I would assume that they would bend under most normal circumstances unless they have been lying around in some Soviet freezing temperature and a hammer fell on them by accident... Quote Link to comment Share on other sites More sharing options...
Burks Posted July 7, 2005 Report Share Posted July 7, 2005 So when are you buying the lot? Quote Link to comment Share on other sites More sharing options...
Blackhawk Posted July 7, 2005 Report Share Posted July 7, 2005 I imagine that a coin could be shattered by immersing it in liquid nitrogen for a bit and then dropping it on the floor or hitting it with a hammer. Quote Link to comment Share on other sites More sharing options...
16d Posted July 7, 2005 Report Share Posted July 7, 2005 Never seen anything like it Quote Link to comment Share on other sites More sharing options...
The_Cave_Troll Posted July 7, 2005 Report Share Posted July 7, 2005 that is strange indeed! Quote Link to comment Share on other sites More sharing options...
banivechi Posted July 7, 2005 Report Share Posted July 7, 2005 Strange. If isn't a ceramic coin, the liquid Nitrogen is the only answer... Quote Link to comment Share on other sites More sharing options...
Ætheling Posted July 7, 2005 Report Share Posted July 7, 2005 I wonder... If the alloy is too pure could that happen? Failing that the only thing i can think of that would cause such a thing would be crystallisation of the metal. With ancient coins i've come across this; Cue to Reid again... But with such modern coins is it possible? Quote Link to comment Share on other sites More sharing options...
BiggAndyy Posted July 7, 2005 Report Share Posted July 7, 2005 http://brokencc.com/Brokenccpics.php Quote Link to comment Share on other sites More sharing options...
ageka Posted July 7, 2005 Report Share Posted July 7, 2005 This type of break is not metal fatigue nor is it plastic deformation It looks like intergranular corrosion which you get at extremes of low temperature or pressure or acid treatment Very strange Quote Link to comment Share on other sites More sharing options...
mike Posted July 8, 2005 Report Share Posted July 8, 2005 When I was in high school (a very long time ago) the teacher shatter a grape and a rose by immersing the in liquid nitrogen first. The sounded like glass when they broke and then when they defrosted, they were back to normal. So I imagine that metal will have the same results. Quote Link to comment Share on other sites More sharing options...
ccg Posted July 8, 2005 Report Share Posted July 8, 2005 Odd. Quote Link to comment Share on other sites More sharing options...
28Plain Posted July 8, 2005 Report Share Posted July 8, 2005 Looks as though Anthony's lucked into a good buy from some European bullion dealer. I'd like to get that particular group of gold coins. Quote Link to comment Share on other sites More sharing options...
ccg Posted July 8, 2005 Report Share Posted July 8, 2005 I'd like to get that particular group of gold coins. Don't we all? That'd be pretty cool. Quote Link to comment Share on other sites More sharing options...
28Plain Posted July 8, 2005 Report Share Posted July 8, 2005 Yeah, unfortunately I'd have to sell some land to come up with the cash, though. That ain't gonna happen this year. ;-) Quote Link to comment Share on other sites More sharing options...
mmarotta Posted July 8, 2005 Report Share Posted July 8, 2005 On weekends, I am a presenter at the Ann Arbor Hands-on Museum. I do a liquid nitrogen show. Shattering coins is part of that. I freeze Lincoln cents and hit them with a hammer. I also shatter mums, but I do not like that. I talked my way out of it last time by telling the audience that when I was a kid, scientists would come do this demonstration and shatter a frog. Wasting a flower is almost as bad. Flowers should be given to a pretty girl. So, one guy in back pipes up: "You never gave a frog to a pretty girl?" When I do this show again, I think I will expand the coinage a bit and see what breaks how. Quote Link to comment Share on other sites More sharing options...
Ætheling Posted July 8, 2005 Report Share Posted July 8, 2005 A few Gothic florins might go down well for that. Quote Link to comment Share on other sites More sharing options...
ageka Posted July 8, 2005 Report Share Posted July 8, 2005 The most cruel demo I had was at univ Prof demo of surface tention You put soap in a tub of water Then put a duck in The duck will sink , no surface tention to float it Quote Link to comment Share on other sites More sharing options...
Guest Stujoe Posted October 21, 2005 Report Share Posted October 21, 2005 http://brokencc.com/Brokenccpics.php <{POST_SNAPBACK}> Doctor! I feel a pulse in this thread! At the show yesterday, I saw a boken Morgan. One part was in one slab and the other part was in a second slab like in your picture but it was more like a 70/30 split and was on the side. Quote Link to comment Share on other sites More sharing options...
Conder101 Posted October 21, 2005 Report Share Posted October 21, 2005 In Liquid Nitrogen I could see a zincoln cent shattering but I would be a bit surprised if a bronze one did. I also would not expect a silver or gold coin to shatter either. (I wonder if clad coins might seperate layers due to shear tensions setup by different rates of contraction.?) Quote Link to comment Share on other sites More sharing options...
Bangbang Posted October 22, 2005 Report Share Posted October 22, 2005 Bang takes out quarter and pounds on it with hammer on concrete step .....the concrete cracked but not the coin. My dad was pretty mad and a quarter in those days was a weeks allowance. Bang takes a quarter and sticks it half way into vice on bench bolted to floor...... took a sharp wack at it with a hammer and woweeeeeeeeeeeeeeeeee! It broke in half. I did this when I was a kid. Bang takes a dollar bill and wraps it around a minie ball ....stuffs it in a 50 calliber blackpowder rifle. Found pieces of it all over firing range. Quote Link to comment Share on other sites More sharing options...
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