Mk2 front hub grease cap

Still after some front wheel bearing grease caps for a Mk2. Had one pop off and as I have no centre caps on my rims I don't really want to keep driving the car without one.
 
All new caps for sale for Escorts (that I have found) are 47mm fit but mine measure a little over 41mm. I believe they are 1 5/8 inch
 
Doesn't have to be specifically escort ones, they can be from a trailer or anything really that measure up right.
 
If anybody can help me out on this matter it would be much appreciated as I'm almost at the stage of driving to a wreckers at Pt Wakefield with the hope they have some grease caps on their 2 escorts out there.
 
Thanks,
Ryan