Can We Add this Filter?

Is it possible to add a filter of checking the legal tender only or demonetised currency only while searching for an issuer's currency? It may not be important for many but a little change can help locate current currency quickly while consulting.

Already available to find current in use …

https://en.numista.com/catalogue/index.php?r=&st=all&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=2025&g=&c=&wi=&sw=

You can even use the keyword “now”, which checks for the exact date, in case a coin was demonetized between January 1st and today.

Except that doesn't solve the “demonetised currency only” search. Is it possible to add a “not now” option that would capture all those demonetized with or without a demonetized  date?

Example: US circulating coins that have been demonetize.

 In use now  310 coins

Total 311 coins

What is the one demonetized?    

 This is near the end of the second page of the 311 results 

and is not in the 310 results [Results per page: 50] > 

N#16466