What do the numbers on the blade mean?

[Danny]

Some blades such as Derby Extra have the numbers 1 & 2 on one side and 3 & 4 on the other. Does anybody know what they are there for?

 

[rainman]

nothing.

 

[dpm802]

They are there for Qualtiy Assurance use at the factory. They have no purpose and no meaning to the end user.

 

[mdunn]

They are there for Qualtiy Assurance use at the factory. They have no purpose and no meaning to the end user.

they do, youre told the secret of the numbers when you reach 1000 posts.

ive already said too much