Swiss specimen coins [solved]

Hello,

For some time, I have been searching for information on Swiss silver coins referred as "Specimen." 

For example : N#184

The differentiation between specimen and non-specimen is only mentioned in Krause's World Coins, and no specialist book on Swiss numismatics (to my knowledge) or even an official statement from Swissmint mentions it. The only auction houses that use this term is Hertiage Auction. Noting that the Specimen designation is only mentioned in the sale description, with no mention on the slab (NGC and PCGS do not mention any specimen for these coins). Apart from these two, no other auction house uses this term. I get the impression that Heritage Auction assesses whether they're speicmen or not (for commercial reasons), but that it's not an exact science and that they're the only ones to do that. In Switzerland, the term "specimen" is never used. I find this very confusing and have considered removing it since there are no official Swissmint sources that mention them.

Even when I try to see the difference, I don't always see it. For example, this coin is supposed to not be a specimen while this one is.

It is probable that there were proof-like coins that could be called specimens, but as there are no official sources and no specialist literature on Swiss coinage mentions this (except Krause), should we continue to list them when they are confusing ? @Jarcek  @Compendium @Indomini16 @ArsenEverlast @tdziemia 

@ystankous Oups, can you please move this topic to the english forum please ?

I asked the CEO of Sincona, one of Switzerland's leading numismatists, about pre-1967 Swiss silver coins “specimen”. Here is his answer (translated from German into English) : 

"Officially, there are no records of how many of the so-called “first strikes” or "specimens" or "proof-like" coins were minted by Swissmint.

The theory up to now has been that these coins were sent to other countries and their central banks as specimen sets.

It is not known whether the dies were actually specially polished, but it is obvious.
 

Personally, I was once able to buy a small collection from a foreign central bank that contained only "first strikes". As already mentioned, however, no such "first strikes" were officially produced by Swissmint. For this reason, the two grading companies PCGS and NGC also have difficulties in some cases, as they also only make this distinction "by eye". And Heritage and other auction companies probably do the same.

Conclusion: Since these coins can be found on the market from time to time and achieve much higher prices than the normal mintages, they should definitely be included in the catalogue."

So I have my answer and the specimens must be kept in the catalogue.