Collins made about a zillion different styles and sizes of machete. A search online for Legitimus Collins will probably be rewarding.
I had a steel industry magazine from the 40's-50's that had an informative article about Collins; I believe I sent it on to Carter Rila. The one thing that stuck in my memory was the process of tempering their blades in molten lead.
We had a member here, Carter Rila, who specialized in machete collecting and was a fount of knowledge on the subject.
That was decades ago unfortunately.