Currently going through a small collection of early Portugal, and looking for a list tying early Portugal barred numeral cancels with the various locations. Initial searching hasn't found anything useful. Hoping someone has run across such a list and can point me in the right direction.
Scott does mention the ones used in Madeira/Azores various islands - E.g. Horta - 49, Madeira/Funchal - 51, Angra - 48, Ponta Delgada - 50, so that's something.
It looks like Lisbon - 1, but beyond that, I haven't found a good site/list similar to those available online for French petit/grand chiffres or GB PO numbers.
May look into purchasing Afinsa catalogue, but currently don't have one. If someone has that catalogue and knows if that info is in there, would appreciate hearing about it.