Enjoyed eye balling that RSA 10 Rand 'Caletan.' I also liked the examples you added 'IGE' (some of them I have).
Here's one I've wanted for a while & found at a reasonable price, a 5 Rupee P-30b from the tiny island nation of Mauritius. The islands are off the coast of Madagascar in the middle of the Indian Ocean. With a population of just over a million, these notes can be hard to source (esp in higher grades). This last series featuring QEII, which reminds me of the Seychelles series, started in 1967-68 for the (a) notes. They had a second print release (with new signatures) again from 1972-73 (b & example below). The majority of notes come from the last (C) version which were produced between 1973-1982. Watching for them, I saw about 3-4 times as many c version as a & b combined.
Fun fact, the previously thought "extinct" dodo bird was discovered on the islands & is featured on the coat of arms (below "Five Rupees")