New Restoration Project: Four-Dot Sasieni

So I bought a sandblasted 4-Dot Sasieni today for $15.00 that is in in pretty dire need of restoration. The stem I can easily take care of - as well as any charring that might have occurred - but I'd like to lighten it up and bring out the reddish tones that shine through when under a bright light. And honestly I'm not completely sure how to do that, but I plan on finding out how and posting it here along with progress reports with pictures. As it is, in normal light it appears almost black.

Under bright light it looks like this, and I'd like for these tones to shine through under any light: