I recently acquired the original tooling and artwork for the Duncan – Miller model 60, aluminum instruction plate. I was also able to get the original manufacturer to reproduce them for me to the exact original specifications... with one exception. The tooling had been damaged and would no longer punch the four 3/32" holes in the corners of the plate. The cost to repair the tooling was very expensive and I chose to hold the cost down (It would have added $3.70 per plate) and have them made without the four holes. You now have the option of drilling your own holes or installing the plates with an epoxy or double sided tape.
Note: Duncan used double sided tape on the final production run of this part, due to damaged tooling. Duncan made a number of design changes to this plate over the years and with a minimum order of 5000 pc's, I had to choose just one design. I chose the earliest, and in my opinion, the nicest looking of all of the designs that Duncan made available over the years.
The plate size and aluminum thickness all stayed the same. Only the information on the plates changed from time to time as the factory changed names and locations over the years.