Sold 1 x 1 kilo Perth Mint cast silver bar as above. Buzz only. No PMs cheers. $800.00 Now includes FREE ULTRASOUND MACHINE.[imgz=http://forums.silverstackers.com/uploads/11108_us5.jpg][/imgz][imgz=http://forums.silverstackers.com/uploads/11108_us4.jpg][/imgz][imgz=http://forums.silverstackers.com/uploads/11108_us3.jpg][/imgz][imgz=http://forums.silverstackers.com/uploads/11108_us2.jpg][/imgz][imgz=http://forums.silverstackers.com/uploads/11108_us1.jpg][/imgz]
Below retail plus free express post. PLUS BONUS: :lol: Free ultrasound machine :lol: Will need batteries. Might cost 2 or 3 dollars if that. No, I'm not joking. This is NOT an April Fool gag. Buzz only. First to buzz gets the chockies.
It tests the density of metals and other materials such as glass, steel and many more. Using the thickness of the material, the machine calculates the speed at which sound passes through it. From that the nature of the material is determined: pure gold, pure silver etc. Works on flat or near flat bars and coins.