How to know Legit signed items from counterfiet ones?

[questate]

Originally Posted by Gameshark

My advise is to avoid items that have been signed.

1. Sellers nowadays are getting smarter and are selling fake signature games for high amounts of money

2. There is no way to verify if any signature on any item is legit. Unless you were there in person to witness the signing.

3. Over priced signatures...

In my case shall ask for a refund then and request cancelling the transaction?