Hi,

I'm thinking of trying to recreate some of these centre caps, I don't actually have an original to work from as yet but I'm hoping that on the back under the mounting plate is a relief recess of the design that I can take a mould from?
The top surface of the cap is domed so maybe a 2 part mould is necessary? 
Any suggestions about how I should go about this, foreseeable problems, probable outcomes?

Once cast I plan on painting from the back in 2 stages (1. logo 2. background)