Hi Jesse,
Sorry for the delayed response, I've been super busy with work lately.
The thing about these old finishes I learned is that they are quite durable. Think about what is occluding the original luster as layers of grime that have accumulated over the years that need to be removed. I avoided aggressive chemical cleaners because I wasn't sure what they would do to the finish. I simply used mechanical, manual labor to remove the grime.
The touch-up paint I mixed is totally custom and matched to this paint color. It's a combination of Testors enamel Gloss Black, Gloss Dark Blue and Metallic Silver. It took me three days of trial and error to get it right. I found that I had to do the touch-up outdoors to get the color match right. I have a small amount I can mail to you, but a small amount goes a long ways.
For a longer quill stem I wholeheartedly recommend the Nitto Technomic. For wider handlebars, use Nitto Noodle 42cm.
You can contact me at
www.stoffeldesign.com.
-Craig