I agree with @El Marro. He knows his G-1s.
If your G-1 is a D series, it should be goat. After that it is hit or miss.
Love to see pics of them both. Is your current issue Excelled?I have two. One is an Irvin B. Foster 1962 model, and the other is a current issue I bought for a friend of mine who outgrew his original issue G-1. It was too small for him, so he gave it back to me.