You say to "just don't have any coins older than 100 yrs. on you". However, I must ask, in all seriousness, when was the last time you were ever "carded" by someone armed with a calculator to do the math on the age of each coin you found ? I mean, have you EVER had someone come up and riffle through your apron inspecting each coin ?
I was never checked by a police and I will avoid dealing with them by all means even if I have to run away. As to others they have no right to check me whoever they are.
Actually it's forbidden to disturb cultural ground layer that is older than 100 years even if you have no metal detector with you and you aren't a detectorist. Finds older than 100 years could be treated as evidence of illegal archaeological activity and in worth cases could lead to 6 years of imprisonment. If detectorist is caught on archaeological site by a police with finds, dirty spade, metal detector that's really bad. Metal detector, bulldozer (some guys practice removing upper ground layers with bulldozers) could be treated as evidence of illegal archaeological activity. There was a real story when guys removed upper ground layer with bulldozer near old church and proceeded hunting with metal detectors. FSB (former KGB) caught them and made a news

Their finds and trash they picked up were passed to experts (archaeologists) and were identified. I saw that report where a bottle cap dated 1930-1940 years was declared as historical valuable item. Lol. There is archaeological society under name "Amator" which goal is to "protect" history from detectorists. Every time they notice a detectorist, they call a police. I've never met them.
Practically it's almost not possible to accuse you if you have no finds or you have no metal detector or spade (but you have finds). By the way, hunting for hoards is not prohibited, meteorite hunting is not prohibited, gathering old rusted iron for recycling is not prohibited, beach detecting is not prohibited, recovering lost keys and rings is not prohibited.
Here you are some universal rules when hunting in RU:
- you are not a detectorist, you are just a guy who gather large surface rusted iron for purpose of recycling
- spade is universal tool that is used as third leg and prevents from falling. Sometimes you use it as crowbar when large iron is found
- you do not practice archaeological reconnaissances, archaeological digs or whatever archaeological. You don't dig ground, you just
gather surface rusted iron
- If you failed to throw finds out, finds should bare no ground particles. These items you bought on local market and decided to test metal detector
-
never confirm police the things they want you to confirm. If it's not a police, you can avoid dealing with them by telling them "F..k you"
Above is not a cure but
could help you.
Even if I ever caught by a police, I would rather run away and throw finds away. Lol. By the way, police do not shoot citizens until citizen treat them with a knife or firearms.
But the best tactics would be avoid dealing with people. Forests are large and there are lots of sites where detectorist's foot ever stepped over
