I forgot the East Caribbean Issue:

which are fairly easy (& inexpensive) compared to the Seychelles & Malta banknotes.
"
I do have a few of the Mauritian banknotes - but the Maltese & Seychelles' notes are elusive to me so far." -BCNumismatics
Both these countries are hard (or expensive) to come by.
I inserted the link to the
P-17 Seychelles 50 Rupees deliberately. It is commonly referred to as the "
SEX" note due to the orientation of the palm branches in the design. It had runs in 1968, 69, 70,72 & 1973 so there are plenty out there but demand/ popularity far outstrips their scarcity.
Book
Values range from $900 to $2,250 USD but recently I have seen the cheapest version
P-17d (1972) auction off for over twice the $900
BV (in UNC-66). The same can be said for
P-15a/b Ten Rupees which has"
SCUM" discernible in it's design & is extremely popular too. The 100 Rupees (
P-18a-e) has no such novelty in it's design & it's
BV ranges from $4000-$7000 in UNC .