As I said in the Ike topic, get it out of that deteriorating holder. You do need something fresh to put it in, though.
It does appear to be Type 1. As to silver or not, I can't tell from the pics. How much does it weigh? The 40% silver (silver clad) should be a bit under 2g heavier than the CuNi clad version. It's a start.
"Oh, cruel fate, to be thusly boned. Ask not for whom the bone bones. It bones for thee."
-Bender B. Rodriguez
"Just because you're paranoid don't mean they're not after you."
"Language is the source of misunderstandings."
-Antoine de Saint-Exupéry
My Want List: http://goccf.com/t/282022