True, if it's a reputable company, you really don't have to rely on the CoA, 
but it's good to have if you ever want to sell that item.  "reputable company" 
is the key for sure :)
  But, I've seen tons of Ebay auctions with CoA's that are just a piece of 
paper without apparent CoA serial numbers.  I bought a knife at a gun show 
years back, it was a Chinese display type thing in the shape of a dragon, it 
was cheap and I thought it was cool so I bought it.  It came with a CoA, no 
serial numbers,  just small paragraph on it stating it was genuine.  The blade 
itself was "limited edition collectable" or something like that...  that type 
of CoA is worthless IMHO :)

 LOL, who knows, maybe in 50 years that "worthless" CoA might be worth more 
than the dagger :)

Michael P. Blanchard
Senior Security Engineer, CISSP, GCIH, CCSA-NGX, MCSE
Office of Information Security & Risk Management
EMC ² Corporation
32 Coslin Drive
Southboro, MA 01772

From: Patrick Laverty [mailto:patrick_lave...@brown.edu]
Sent: Tuesday, April 05, 2011 9:26 AM
To: Blanchard, Michael (InfoSec)
Cc: funsec@linuxbox.org
Subject: Re: [funsec] Verified by ....

 I always get a kick out of the "certificates of Authenticity" that people give 
with an autograph or some other collectable item.  Hell, I can print a million 
of those certificates and have someone's signature printed on them too... with 
a cool color shifting "official seal" too!

Without trying to hijack, actually if it's a good company giving out the CoA, 
then it has a number on it that matches to a database in the company that will 
tell you exactly what the item is and who the autograph is of.  Sometimes, the 
item will have a second serial number that is also matched in the database.  
Now, if you can print up a million of those CoAs AND get that info into their 
database, sure, you've beat the system.  But simply printing up a CoA from a 
reputable company doesn't get the job done.  If you're selling fake memorabilia 
to someone who doesn't check the serial number, then they're not someone who 
needs a CoA anyway.
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