I just picked up a used Vanson model B. Owner said that they got the jacket back in 90's. After I bought it I found out that Model B comes in both competition cowhide and thinner Firenze leather. Is there a way for me to find out what leather is actually is? I am planning to use it for motorcycle riding so would be nice to have the thicker version. The jacket itself is very well broken in so feels quite soft and flexible, but also quite heavy, so I can't really tell what it is.