Any local coin shop should be able to test them for you w/o opening the assay card.
Both LC and I have Sigma Metalytics verifiers that can do the job, too...
I didn't get them from a local coin shop so I didn't have a machine to test them with, but the serial number on my bars are definitely not smaller like your website suggests. The first "C" in my serial numbers never cross with the "essayeur fondeur" logo like your website suggests they would if they were fake. I don't know how to explain the other discrepancies but I still doubt they're fake, maybe there is some other explanation? Either way, I'll find out for sure soon, but already one of the details on my bars don't match up with one of the details of the fake bars on that website.
You can still take it to a local shop to be tested