For some reason they have enough space on the "small" (rappen/centime) coins for the full Latin version of the country name - Confœderatio Helvetica. The little "B" refers to the mint in Bern, but some of the pieces in that year, also with the B, were made by The Royal Mint in the UK. Your type was made between 1968 and 1981, but today's 1 Fr coins have basically the same look ...
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