Rear Wheel - simple question

[Fat Bert]

Had a new rear "hoop" fitted today and noticed that there appears to be something missing from the middle of the wheel on the nut side?

Inside the middle of the 5 nuts, there's basically a big hole with a flange showing

Should there be some kind of cap/cover?

[the mechanic]

Yes there should be a silver cap Bert.

[Fat Bert]

Bugger!  Missing!

Presume its just a dust/weather cap though?

[the mechanic]

It is, but it does "finish" the wheel off well, when I had my Explorer, it didn't have a cap in the wheel, to me it never looked quite right.

[Fat Bert]

Cheers - as ever - great input from The Mechanic 

[Fishbone]

The tyre dealer I used forgot to replace the centre cap after fitting a new tyre!
Returned the next day to find it lying on the workshop floor. Common mistake.