Just finished sharpening this small ceramic backlock folder without any markings (probably made by Böker)
This well made knife had practically no edge and no point, and even opening mail with it was difficult.
The new edge fits in the 30 degrees inclusive slot on my Tormek angle gauge, is slightly convex, and can shave the hair on my leg in both directions.
I used the Tormek Black Silicon stone graded to around 1000 grit for reprofiling, followed by diamond compounds 15, 6, and 3 micron, all on dedicated Paper Wheels.
Specs:
Length open: 4.7 inch (12 cm)
Length closed: 3.0 inch (7,5 cm)
Blade material: black zirconium oxide
Blade length: 1.8 inch (4,5 cm)
Blade thickness: 2 mm
Handle material: Ivory Micarta & Nickel Silver bolsters
Weight: 61 grams