What a cool discovery you've got there, vermontpackrat! 8) I too have found two or three of these unique treasures over my 25 plus years of swinging the wand. All were even smaller than yours and yet each one brought a certain thrill that other stuff doesn't trigger. Just to think that they had all just been laying there, with just a little thin coat of dirt on 'em all those years, and Nobody had seen them there. Only You, with your powers of observation and yer trusty detector of course too, could unravel those threads of long lost times and uncover history like that. Congrats on feeling what That feels like. Looks good on ya, after all yer hard work too...
Thanx for sharing such great photos with us too! Backs up what I've been saying for years, if you want to really find stuff, then really start looking.