Spare wheel mount

[Brad Mills]

Does any one have photos of the bottom cup for the spare wheel mount? I have one but its missing the rubber which is riveted on. I cant sort out what the two smaller copper rivets are for. I assume a piece of rubber on the outside of the cup, but mine is missing and I have no idea what it looks like to make a copy. I know the 4 larger rivets secure the rubber ring which sits against the wheel hub on the inside of the cup.

As well, what is the length of the mounting stud that secures the wheel.

Some photos of the piece in question (the last photo)..