15 franc gold coins

Are the Tunisian 15 franc coins the only 15 franc coins?
https://en.numista.com/catalogue/pieces56429.html
https://en.numista.com/catalogue/pieces112640.html

I have found 100, 80, 50, 40, 25, 20, 15, 12.5, 10, 5, and 2.5 franc coins. The only 15 franc coins I have found are these Tunisian coins. I know the Guatamala 4 Reales is the only 2.5 franc coin
https://en.numista.com/catalogue/pieces56607.html
but I am not sure if there are other 15 franc coins. By 15 franc I mean by weight and size. A LMU coin. So a e.g. 15 Lira coin with the same weight as a 15 franc French coin (if one existed) counts as a 15 franc coin to me.

https://en.numista.com/catalogue/index.php?mode=avance&p=1&r=&d=&ru=&i=&ca=3&no=&se=&v=&m=6&a=&t=&dg=&w=4.91-4.93&u=&f=&g=&c=&wi=&sw=&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ct=coin

Looks like the closest is the ultra rare ZAR gold 6D. Got 500k spare? :D

the only 15 I ever heard of.
thanks for posting, I never knew I wanted this.