Why are there no marks shown for this coin (Monaco 1c etc 2006)?

From the image, it looks like these coins have mint and privy marks but they are not shown for this and a few other coins from Monaco, but they are for most others. Is this an oversight? Or do most of these coins not have the marks?

The catalog is a work in progress. It's always being updated.  Nobody has added the marks for the coin you're questioning.  You are free to do it:

https://en.numista.com/catalogue/contributions/modifier.php?id=5028

Thanks for your reply. I don't have these coins so I am not sure what the correct marks are which is why I was asking. I don't want to add incorrect data