An example of this "Fine Hamilton" line is the 1958 Coburn.
The Coburn came in a 10K RGP case with a stainless steel back. The dial is embossed (stamped) with numerals and triangular markers.
Under the dial is a 17 jewel Swiss-made Hamilton 673 movement. I believe it's an 10.5 ligne grade made by A Schild and identical to the A. Schild 1200 movement (if you're looking for parts).
I recently purchased a Coburn in a group of project watches. It was very dirty but once I cleaned it up I was delighted to see that it was in great shape - including the original bracelet!