Vintage Italian Switchblade Knives
This one is 6-1/4" open.
Pattada style knives
I believe these were made in the 1960's or 1970's and most of these are
stamped with the Jndiana logo. They are a button open, button close mechanism.
These four are 7" open.
This one is 8-1/4" open.
This one is 9-1/2" open.