Fr "BE" variety of French 1 Franc Coin

What does the Fr "BE" variety of the French 1 Franc coin reference? I am trying to identify this variety.

  This is originally a French site, which added English later. There are two pages/languages for each coin. So on the English page the Fr refers to comments written on the equivalent French page that are not on the English page. I remember this topic showing what BE means ...

https://en.numista.com/forum/topic5229.html

 and so it is not a variety of the coin, more a condition to tick - if you have a proof coin. So the Fr BE appears on many coin pages, not just the French 1 Franc page.
 Welcome to the site.  

P.S. Here are pages for a 1 Franc coin in each language ...
https://en.numista.com/catalogue/pieces6.html
https://fr.numista.com/catalogue/pieces6.html
 so 1991 (and other years) on English page shows (fr) BE then also on French pages a lot of lines have
(en) dolphin mark showing what is on the English page which nobody (yet) has translated to French.
 Any page can be looked at in the other language by clicking the flags at top of page.

Now, since a lot of coin information has standard phrases that apply to many coins, would it be possible to create Spanish and German versions as well? This would of course need additional volunteers :-) any plans?