These are rather dull little cards. Unless you have a completist urge regarding this gentleman's work, they don't offer much. There are few moments of inspiration and only a couple turn out to be memorable. Most consist of reproaches of various kinds, frustrated attempts to arrange a date, complaints about several work and health matters... The attached poems are infamous and the illustrations are on a par.
It is worth it -that's for sure- to get an idea of what it must have been like to maintain a relationship with the oligophrenic of Pessoa.