I can only find these. Do you have the means and skill to make them? Have you tried ebay? You should be able to find what you want in a selection. Here is the link to what I found.
Thank you for the response. Can I use any old penetrating oil or is there a standard for watch repair?
I've also attached an image of the movement.
The topmost three screws (excluding the screw attaching the movement to the case) are all stuck. They are a nice blued steel colour.