1970's Vintage Coltelleria Collini Flylock Switchblade Knife
Knife is on page 71 of "Foreign Spring Steel Collectors Guide Vol.1" by Vincent Federico.
The Flylock System is basically the Axis Lock System which sliding the lever down will open and close the knife.
Quick Action Opening And Lock Up Is Superb.
Overall Length: 7 3/4"
Blade Length: 3 3/8"
Stamped: INOX PATENT
Made in Italy