in section 3.4.8 of the Guidelines (Picture (obverse, reverse, and edge)) there is a link to Swiss Railways coins as an example of types where pictures should not be reused.
https://en.numista.com/numisdoc/articles/catalogue_guidelines.php#picture
The current link is https://en.numista.com/catalogue/index.php?e=suisse&r=&ct=coin&im1=&im2=&tb=y&tc=y&tn=y&cat=y&ru=&ca=3&no=&v=&i=&b=&d=&u=&a=&dg=&m=&f=&t=&w=&mt=&g=&se=%22Swiss+railways%22&c=&wi=&sw= which finds no coins.
A better link would be https://en.numista.com/catalogue/index.php?e=suisse&r=swiss+railways&ct=coin&im1=&im2=&tb=y&tc=y&tn=y&cat=y&ru=&ca=3&no=&v=&i=&b=&d=&u=&a=&dg=&m=&f=&t=&w=&mt=&g=&c=&wi=&sw= .