Colonial coinage is some of my favorite. Usually because it blends design elements from two very different cultures, and also the coins often have small mintage numbers. These coins fit both criteria. I also have the bronze 2 bese and 4 bese coins, just need a nice 1 besa to complete the set. 1/4 rupia 1913 1/2 rupia 1910 Rupia 1914
Yes they can get up there. I have not been able to get the later 1920's types for that reason... they are either fake or cost crazy money.
You have to be careful with the colonial coins, they are heavily faked. Especially the Eritrea tallero coins. It's quite a risk considering the prices that genuine coins go for.