I need to have a stamp made up for my business, as I'm getting tired of the "obviously, you're not serious" look in situations where I should pull out my self-inking stamp to make a document official when I sign it. I've looked at several stamps from different French enterprises who have used them on devis and factures to me - are there any specific requirements for what's included in the information on the stamp? From what I've seen, there's the obvious company name and address, and an RCS number, which I don't have as I don't employ anyone (at least that's what I think the RCS number means - correct me, please!). There's an indication as to the type of business, but one SARL has its capitalization amount, the other doesn't. I was thinking of putting my SIRET number on there, but maybe I shouldn't. So, I'm confused, but it's not the first time!