I always thought "obscuring the cert number" was a way to keep our Chinese friends from making exact copies of the coin, label and slab. But I'm not sure. ??? Note: The person obscuring and sharing online this photo was NOT selling or trading these coins. He/she was SHARING photos of them online on a Korean-language blog post. Really... it does make me wonder why the Korean numismatists in particular like to do this. This is a noticeable trend with them, just from my own browsing of these online Korean sources. How does hiding the cert help? I think this one is the best answer yet:
It does nothing. There's more than enough out there it makes no difference. It's like trying to protect your home by putting bars on the window but you have no front door.
absolutely, the NGC app is good. I use it all the time for the registry, but mostly to keep track of the NGC certified coins I own.
Okay. Fine... I still don't know why they do it! Simple paranoia? I mean, these guys are NOT selling their coins. Just displaying them on blogs. So covering up the cert...?
/1/ Just because you are paranoid doesn't mean they aren't out to get you... /2/ Lots of people think there is a lot of data out there about you and wear tinfoil hats to cut down on how much is known.
For future reference (self-help) grab a program like Paint.Net (heck you can do it in MS Paint). Paste the image - if it's nicely aligned like your original it's easy. Copy small sections of the bar code you can see, paste them over the obscured part. Repeat until scannable.
paint.net is free (getpaint.net). Somebody's going to come along and suggest the gimp, but too much learning curve for me.
Here's another example of someone covering up a barcode. This time, it isn't a Korean, but a U.S. collector (I think): I asked this person why he did it. I'll post his reply here (if he replies).
Yeah, THIS one is easy! The barcode is right there, unobscured. I just wanted to show this one. It's a U.S. coin, and the FIRST one that I have found with blotted-out cert. number.