Spyderco has updated the Ed Schempp designed Persian and small or 75mm Persian and designated them the Persian Folder2 and Small Persian Folder2.

I like these updated versions.  They both feature VG-10 steel and G-10 handles and are of  lock back design. 

Overall length of the Persian is 8.25″ with a 3.44″ blade, while the length of the small Persian is 6.88″ with a 2.94″ blade.

Spyderco Persian Folder2 Knife

Spyderco Small Persian Folder2 Knife

I also have some of the Gayle Bradley Folder available.  It features a 3.44″ CPM-M4 steel blade along with Carbon Fiber scales.  It is of liner lock design.

Spyderco Gayle Bradley Folder

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