Found a really nice '63 Washington Quarter sitting by itself in the reject tray today. My very first quarter in the wild!
It's hard to say. I've seen silver coins in the bags on the machine & also seen them in the reject tray/tube. I think they normally are supposed to reject the silver coins but it depends on the amount of the coins going thru the machine at the time which may cause them to be accepted. I don't know if the age/model of the machine makes any difference. Congrats on the quarter by the way. Hope you will find more in the near future.