Bitteswell
Thanks. I'll carry on soaking it and maybe some letters will emerge slowly.
Use a toothpick or dental pick to try and remove the more stubborn stuff on the coin. Distilled water, toothpicks, and dental picks, along with the occasional scalpel usually restore coins pretty good. But be careful with dental picks and scalpels, if you put any pressure, you might scratch the coin. I only use metal tools to remove thick, crusty dirt. If none of the corrosion comes off with a toothpick, then very carefully give it a soft pass with a needle. MAKE SURE IT'S CORROSION TOO. I messed up a nice Aurelian antoninianus when I thought I could pick off the corrosion, and ended up chipping the patina. Thankfully, it wasn't a very good coin. If it comes off and reveals detail, then carefully try to pry off the remaining corrosion. If it doesn't reveal detail or come off, then leave the corrosion. The coin that you have seems toasted on most of the obverse, but the reverse looks to have some of the legend covered with some dirt. I'd just use toothpicks and maybe a very dull pin or something to get that dirt off. Don't try picking anything off that isn't dirt. Soak for a week in distilled water, then carefully scrape away the dirt with a toothpick, as that dirt seems soft and there's only a little bit of it. Metal tools are better on coins that are unrecognizable because they are covered in dirt and crust. Just some tips for next time you have a dirty coin😉