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.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024