I have read where it has been suggested to clean out between the lettering (and therefore the incuse square) with the point of a needle, but I fear leaving the presence of 'scratches' using that method, so a long soak in de-mineralized water (doing that now) is my first avenue of attack.
Then, I propose to brush with a nylon toothbrush (cut short) to remove any 'garbage' that has been 'loosened' by the soaking.
By the time all of this has been done, my Sonata Light Box might have arrived and I can set to and try to take better photographs of these coins and post them.




















