Swiss Mint Discrepancy Question

Dear All,

I have recently acquired a very thin 10 rappen coin. I believe it to be counterfeit...however, I would like to know whether anyone knows whether the Swiss mint has a known discrepancy in weight and thickness?

The Swiss are notorious for consistent precision.  It is possible it's a fake, but 10 raps?  It's like counterfeiting a dime.  I've seen an early 5 CHF (like 1890something) that was falschgeld but 10 raps?  Dunno.  Picts and how much weight are we talking about?