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First post in a while ;) I've recently become a resident of our nation's fair capital and finally got around to checking out the LCS......... :o Maybe I'm just used to the premiums on GP's site, but I was a little bit shocked at their premiums - gold at 9%, silver 50%, and round fiddies close...

Thinking about physical properties of metals that could be used to non-destructively test for composition, I noticed that the thermal diffusivities of gold/tungsten and silver/lead are significantly different: Gold: 127 mm^2/s (https://en.wikipedia.org/wiki/Thermal_diffusivity) Tungsten: 66.2...

I'm thinking of grabbing some unallocated Ag and/or Au. I know most stackers are believers in the adage "If you don't hold it, you don't own it" to one degree or another, so I was wondering where the forum thinks unallocated bullion fits in the spectrum. Some seem to consider it scarcely better...

Was mass spot-bidding some larger denominations of Panama Balboa last night on eBay. Woke to find one of my bids successful - only to discover that the 1978 ten Balboa was also minted in nickel, which is near-certainly what I bought. Groan. Nickel price $15 per kilo, that'll learn me. Does...

I'm about this close to pulling the trigger on a biggish coin purchase from the US. However the coins I'm looking at are nicely over the $1000 limit and are only .9 fine, so would be subject to GST. +10% kind of kills any semblance of a good deal. Is there any way to duck this, or am I SOL if I...

http://www.ebay.com.au/itm/20-UNCIRCULATED-1964-Kennedy-90-Silver-Half-Dollars-Coins-10-Roll-/281132416888?pt=AU_Coins2&hash=item4174cc3f78&_uhb=1 Made a bid on these before realising seller has zero feedback. Rookie error, I know. Other items for sale are all coins, but stock photos rather...

I'm interested to learn why most coin stackers seem to go for the "semi-numis", kooks and the like. I only ever seem to find these for sale at (to me) ridiculous premiums over spot - 50-100% over is not uncommon, even 200% with some coins. This seems more like collecting art than PM. Nothing...

Trawling ebay for some stackworthy shrapnel, and came across a few like this: http://www.ebay.com.au/itm/1938-CROWN-AUSTRALIAN-COMMEMORATIVE-RE-STRIKE-SILVER-LAYERED-SPACE-FILLER-/221227484569?pt=AU_Coins2&hash=item33822f8599&_uhb=1 What does "silver layered space filler" mean? Is this a coin...

Came across an old baked-bean-tin full of pre-decimal Aussie currency in a shed I was renovating. Mainly pennies and florins, some half pennies in there as well. Some of them are scratched, and all of them have some level of tarnishing, from medium to severe. Have not yet taken the time to...