ceh2019
BCNumismatics
They should be under ‘Banknotes’, as they were authorised by the local central banks & their respective governments.
They do NOT belong under ‘Exonumia’.
Aidan.
It's how they were used that matters, not who authorized them.
In the guidelines (updated 9 May 2023) the key is actually whether they have “a determined value (denomination) within a currency system”, not how they were used (and also not authorization). Intent to circulate isn't required.
Do the certificates have a determined value in a currency system? Looking at one of the items in the list from the original post, it could be argued that doesn't seem to have a value, but can be exchanged (in specific places) for something that does:
The Spanish Bank of The Havanna to the presentation of this banknote, will pay to the bearer five cents in cash.
That argument would place the items in Exonumia.
On the other hand, if they did actually circulate (and the pictured item looks well circulated) then it gets a denomination from the circulation (Guidelines: "The denomination may be explicit or implied by de facto use.") and belongs under Banknotes.