This has to be one of my best cleanups of all time. The grime was so compacted on this one it took almost 8 months in olive oil, a wash in lye, and a harsh tooth picking to get this coin to reveal itself. Overall I am very proud with the results.
Before:

After months of cleaning:

Maurice Tiberius
Æ Half follis
582-602 Ad
SB 497
It looks like a completely different coin honestly. There were parts of the rim that chipped off and I had to find down that were flaking but everything else is original. What do you guys think?