The compass was in pretty rough shape. It’s an obsolete Ritchie SRB-2. I contacted Ritchie asking to see if it could be refurbished.
Nope. But they did recommend a brand new replacement SR-2 which is about $150 on Amazon.
So after a few YouTube videos, I purchased some Odorless Mineral Spirits and opened her up, flushed and brushed out the old crap and refilled it.
It will do for now. Any ideas on what to do about that bubble?