I am currently in the process of modifying a Seamster SMF300 (198.0016).
Having been unable to find a solid 18k gold version of this model (they almost all appear to have been melted for scrap value - I am still actively looking if anyone can point me in the direction of one that may be for sale), I decided to create a bi-colour version.
I sourced a date and model correct gold crown, gold date wheel, gold hands, 18k dial and 18K bezel.
These have been fitted to a steel case.
As I prefer these watches on a bracelet rather than a strap, I also sourced a NOS steel and gold substantial strap from a period correct Constellation MegaQuartz plus genuine Omega end links which are being modified by a watch case maker to suit the 198.0016.
I started this process in the realisation that this type of modification wouldn't be to most collectors taste etc.
However, I was driven by what I thought I could create to my own taste.
I really love how the watch has turned out to date and can't wait to see what it looks like when fitted to the bracelet.
I have four other SMF300's which are all in original specification.
The watch I have modified is my favorite of them all though, which I suppose means that the project has been a success.
At least to me anyway🤷😁