Beware guys, there are some very good counterfeit Glock 78 field Knifes on Ebay. I purchased one from a seller in Seattle and it was a counterfeit. He may not know they are counterfeit. The pictures don't match what they send you. My new knife came directly from Italy from a friend, not the USA.
Original Glock
Magnet sticks to the back.
Hole does not go all the way through the knife.
Molding on the sheath is on the back.
Knife blade has a coating.
Balance is from the bottom part of the plastic handle with one finger.
The knife clicks firm and loud in the sheath.
Counterfeit
No metal in the rear of the knife.
Hole is drilled all the way through on the knife.
Blade is not coated.
Knife is blade heavy and not balanced.
Doesn't have a strong click into the sheath.
The Glock logo is not as clear as the original. It is very good though.
If I remember correctly, the logo was on the opposite side of the sheath.