Look at these....
2 LBS Cleaned Silver Electrical Contacts for Scrap Recovery 910 Grams | eBay
Most I seen are little itty bitty dabs of silver on older washing machine switches and some circuit breakers, like the size of a ball point pen tip. WTF did those come from??.. lol....**** and 700 and change and counting. I want some. I will be rich I tell ya...wink wink lol