The guide is a friend of our German host. He is American but lives over here. He has been detecting in Bavaria 18 years. Don't even get me started on his awesome collection!
Silver content is low for some of them (18% to 28%) and high for others (90% to 95%). Coins look yellow because Germans love light bulbs with soft yellow light (I took the pics indoors).
Coins minted after 1870 are considered modern.
Yes, WAY too many beers this week!
Yes, they have lots of detectorists but the amount of finds is so wide-spread it will last for generations.
Here's the medieval eating knife I cleaned today... (15th - 16th C.)