Yes you can put those items on this forum.
Chinese people are the best to make fake coins
, look on picture here are 3 Huo Bu spades of Wang Mang
the coin on left is a genuine coins, the 2 others are 2 fake,
I bought the middle coins 15years ago like a genuine, my mother putted it on a string to make a necklace, after a few years, the patina is leaving the coin and show us brass. Like brass wasn't used before 13th (or 16th I have a silght doubt between these 2 dates) century in China, this is clearly a fake.
The coin on the right is a recent fake coin an friend (and coin expert) in China identify this coins like a fake but I can't say why.
the best example I can give you is a coin I bought 2weeks ago near a member of ther Oriental Numismatic Society, when I posted this coin on zeno, a few doubts have been mentionned by 2 collectors because of the high quality, I asked to my friend in China and he gave me this answer:
"This kind of coin is the most difficult to distinguish genuine or fake.
You must understand the style of the coin very much, you can buy.
If I don't see in hand, I am not sure. "
The coin is now on the way to China nad I'm hoping.
Actually, 90% of the coins on the internet market are fake coins
and about 40% of other markets. Personnaly, I only buy near 6 sellers (1 in Netherland, 1 in China, 2 in USA, 1 in Singapourg and 1 in Hong Kong), I know a few others sellers have genuines coins but when I pay $1000 for a coin, my confidence in the seller must be biggest than all what is existing on this planet (and after such purchase, I can't buy anything near other seller^^).