yeah your missing the whole bezel, metal plate and screws.
this one
https://www.dsvendinginc.com/p-2316-d250065014-marsmei-vn2511-bezel-kit.aspx
or this one
https://www.dsvendinginc.com/p-9424-d250064300-marsmei-merchant-media-bezel-kit-clear.aspx
I've used both.
looks like your missing the top plastic piece as well, Probably have to get that part from suzo happ….. Guess you don't necessarily need it, but I'd still try to find it since it's meant to protect the pcb.