Hard facts from my research that has been incorporated in my upcoming book:
1) Royal Hawaiian Mint issued over 55 coins with the image of Princess Victoria Ka’ulani.
2) Krause Publication is the only major publisher that has cataloged (less than 15) the Royal Hawaiian Mint Royal Princess Victoria Ka’ulani coins.
3) Royal Hawaiian Mint struck the Princess Victoria Ka’ulani coins in four different metals.
4) The largest Royal Hawaiian Mint Royal Princess Victoria Ka’ulani coin is 39 mm.
5) The smallest Royal Hawaiian Mint Royal Princess Victoria Ka’ulani coin is 10 mm.
6) Royal Hawaiian Mint Royal Princess Victoria Ka’ulani coins were issued in 10 different diameters.
7) The 13 mm Royal Hawaiian Mint Royal Princess Victoria Ka’ulani coin is the diameter with the most issues.