So I was given some fake ASE about 6 weeks ago to see how they compared to the real thing as ASE are the bulk of what I tend to buy, I normally stick to current year from well-known companies but I do occasionally like to buy from their circulated/random year inventory.
All of these photos have been enhanced to help with less than ideal lighting you can find the unedited full photos HERE ON GOOGLE+
PLEASE be vigilant when buying precious metals if you are buying from individuals or sources you haven't fully checked out. Your best bet is to stick to trusted merchants and mints, BE EXTREMELY CAREFUL buying from individuals on eBay/Craigslist or even from local coin dealers/pawnshops/antique stores.
Obvious issues I immediately see... fonts, lines on the shields, the fact the obverse and reverse both have the same 'north', the tilde is wrong, detail in face/dress/hair/eagle wings/eagle neck, he size of the bullet points.
All of the following are counterfeit, from this point on there are no more authentic coins.
I happen to have some liver of sulfur at home from 'antiquing' a sterling silver ring a few years ago to try and match the patina in the knotwork of an identical ring I had been wearing for a decade so lets see what it does to three counterfeit coins.
The following image is after five minutes of exposure to the liver of sulfur:
In the next image it's had acid poured on it, and has been cut in half.
In the last image some of the 'silver' plating has been ground off to give a better look at the true composition
As you can see, a quick test with acid clearly revealed it to be fake and if you look at it closely there are several red flags in the design compared against images of known authentic 2008 rounds.
Normally when I see someone cut into fake silver it's brass, this thing remains a silver colour:
UPDATE January 24th, 2017
Here's a fake stagecoach bar from /u/PlanoSteve21
Here we have a fake and a real gold bar from the Perth Mint. The bar on the left with the packaging crease and serial A050325 is the fake gold, the uncreased with serial A011421 is the authentic gold. This image comes from user /u/agoracomm
Here is a fake 1987 panda from /u/Cho_Zen
Here we have a fake 1968 25 Pesos from /u/JimmyRnj, as you can see in the 2nd photo it is magnetic
Here /u/Ryans_Rust shared a real and a fake RCM bar, the bar on the right is the fake. In his words:
UPDATE June 3rd, 2017
Here we have a fake Kookaburra that /u/UncleZangief came across. In his words:
UPDATE June 5th, 2017
/u/ambermetals created a thread alleging that /u/Ryans_Rust (who reported fakes above) sold him hand poured bars that turned out to not be .999 silver as indicated. I'm posting the photos here to preserve them as well as the initial post, the entire thread can be found at https://www.reddit.com/r/Silverbugs/comments/6febph/fraudulent_bars_from_ryans_rust_mint/
Here is the X-ray fluorescence test. The bar is Ag = 88% Zn = 4% Cu = 8%, clearly not .999 silver.