A big thank you to everyone who contributed to this and posted extremely helpful photos and uses for Calvi & Bastia. They both have many uses, I have now got a calvi for cards and just added a mini silk coin purse, which I use to hold jewellery for when going to yoga or the spa. I don't really carry coins any more, but it's good for earing & other small items I'd rather not loose. I chose this over a Bastia because of the silk lining. Bastia Is also useful and could be essential component ... to perfect my in-bag, filing system.