Help to ID brand of Knife from Psycho 1960, might have a logo!

[Jaym1818]

Hello, I'm trying to ID the knife from Psycho, I will attach my stills, there may be a light glimpse of a logo in one shot on the top left corner, I'm hoping might ring a bell to someone, thanks for looking!

 

[1dog]

Dexter model no. 48912

 

[Jaym1818]

Dexter model no. 48912

Thank you for confirming I was leaning towards that!

 

[RonB]

Ok, but is it the real thing or a stunt double?

 

[Jaym1818]

Ok, but is it the real thing or a stunt double?

Most of the time both are used, in the movies I've looked at real knives are in a majority of the scenes.