There is no US customs or immigrations check for folks leaving to Europe. You can take 1000 'legal' cigars OUT of the US. The problem is entering your destination country. Google is the travelers friend. "switzerland customs" and a couple links and you get straight from the .ch site:

Tobaccos
1. Duty- and tax-free
These limits apply only to persons aged at least 17 years
Cigarettes 200 or
Cigars 50 or
Cut tobacco 250 grams
Cigarette paper 200 pieces

2. Customs duties for additional quantities
Cigarettes Fr. 148.90 per kg
Cigars Fr. 15.-- per kg

So, if you did take 51 cigars, xe.com will tell you how much 15 Swiss Francs, aka CHF, per Kg is.

However, though your final destination is CH, perhaps you are flying into France and driving to CH? In which case you clear customs and immigration in France, as CH is now a full Schengen member and no land border controls are usually present. The France free limit is 50 cigars, with changes pending, according to the French Embassy site in D.C. I went to a public school, but I think your 12 cigars are under the 50 cigar limit.

Or just leave the cigars at home and buy some Cohibas over there. ^ They are great. $15 to $25 USD. Each.