As usual 
Originally I set myself a #stackingoals target of 100oz, but I've flown through that already and now I'm aiming for 250oz this year. My strategy is to buy regularly and as cheap as possible, so I asked BYB to get me 30oz of the cheapest rounds/coins.
It's the little touches that make BYB su h a cool cat. The box is immaculately WRAPPED. I mean WOW!!! Wrapped... The corners are perfect and seemless, it's like he is a professional box coverer, a skill any of Santa's little elves would be proud of.
So what did I get this time??
A full tube (20) of 2009 1oz Austrian philharmonics. Now admittedly there is a little toning going on but they've held up well for coins that are 10drs old
The rest of the order is made up of 10X 2011 1oz, Austrian philharmonics.
You can tell these 2011 philharmonics are BU but they are covered in "milk spots". All silver buyer know the sight of the dreaded milk spotting.... Although a naturally occurring phenomenon in some coins, it does make a few of these only good for melting. I don't really know the exact science behind milking, but I believe it's something to do with the chemical mix used when manufacturing.