Thanks for the compliment Paul, I can make these smaller or larger and with more dome, less would be almost flat. The stem is stainless,the rest is nickel silver.
I just cut the head off of a plated 8-32 screw, tapped the back plate and hard silver soldered, but now that you mention it I'll use SS screw in the future.
I like the idea of file work, also over lay with the same or contrasting metals, similar to the method of inlay in your sheaths, also bezels with stones, many possibility, these are fun little projects.
Mark