stampings

I am restoring my 351 W to as close to concours as possible. I am up to the details and am trying to find a way to get the O-K (on the valve cover) and OK 1021 stamp (on the engine block). I am also looking for the paint ok inspector name stamp. I have not found these stamps anywhere. I am now trying to figure out how to get them made, but cant find a place that will make the stamp; except for kinkos which charges $30 for each stamp. I also can't find a template of the correct size to use to get the stamp made.

If anyone knows of a custom stamp making place or where I could find a template to use I would greatly appreciate it.