Well, there is a fake TOS Phaser on eBay right now. It not only doesn't look right, but the Phaser has a hologram, similar to the ones we use at Propworx (though not as elegant!) on it with a COA from CBS!
Well, not really. That is what the seller claims. CBS has never, to my knowledge, handed out a COA like this, and they certainly don't authenticate 45 year old props.
I will keep you all posted on what the seller says, but in the mean time I have reported this to eBay and CBS.