Possible error regarding coin sizes (mm vs cm) [solved]

I think some people confused mm with cm, when they wrote the coin sizes:

I think all of the following sizes are wrong:

https://en.numista.com/catalogue/index.php?r=&ct=coin&im1=&im2=&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ru=&ca=3&no=&v=&i=&b=&d=&u=&a=&dg=&m=&f=&t=0-5&w=1-100&mt=&g=&se=&c=&wi=&sw=

The query does not match all wrong sizes, because some coins don't have a weight in the database, so maybe a check for all coins ≤5 mm would be necessary.

Is it possible to add some kind of validation, when a new entry is created? For example: ‘When the size is smaller or equals to 5mm, the weight of the coin should be below 1 or 2g’?

Thanks a lot!

Thanks, checking and requesting changes now.