The ones on my recent acquisition were a bit worn, so I asked a friend on quiltingboard.com to photograph hers so I could reproduce them. Well here they are, hosted on Google docs in svg, pdf and png formats.
I plan to print them onto waterslide decal paper and will let you all know how it goes.
Update: It went extremely well. The backing can only just be seen, and since I printed them exactly the same size as the original I didn't have to rub the remains of the originals off, just slid the new one over the top.