Tried it today, the new settings. Since the place was full of iron and detected more than 5 years, I did the following. Sensitivity 99, 21 Disc, 4H tone, Je Process. I discovered that the 4H hears shades of the masked targets better than the mono tone. In order to function 4H sound better is needed Disc to be turned 21. Disc 21 and 4H leaves only three sharp sounds, which makes hearing the sound will be simpler and more visible.
The result is here Henry III 1216-1272 long cross penny. And it shows up in Estonia

. Fisher surprised me once again.