Search for items with or without pictures

would it be possible to add a filter to search the catalogue for items with pictures or without pictures or all?

https://en.numista.com/catalogue/index.php?r=Elagabalus&st=147&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=&a=&dg=&i=&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&c=&wi=&sw=

Bit hidden but on here

https://en.numista.com/help/how-can-i-search-the-catalogue-99.html 

/no-picture/

In the search field

Now all we need is for this /picture/ to work.

You can use more search filters by clicking the button “+Add filters”. If you repeatedly want to use the advanced filter, you can pin the filters open by clicking the pin icon at the bottom right corner of the advanced filter box.

the button “+Add filters” is here

It seems that we cannot type Elagabalus +/no-picture/   or  Elagabalus -/no-picture/

In view of this post you can add a filter without + or -, just a space