tube tech question - cut box tab

[oldman55]

Have I sleeve of NIB tubes. Every box had one tab (under the cover tab) cut off. Since they were irregular cuts, I am guessing that it is not factory cut and is a signal for something? They all test strong and print is perfect.

 

[primosounds]

It is just that the old tube boxes the cardboard gets soft and easily torn. So , the person who first opened it did not treat it gently and forced it open tearing off the tab. If the tabs are still in the box it is better to tape them back on the back flap which would keep the flaps closed again.

 

[petehall347]

looks like a new box and poorly made to me

 

[oldman55]

looks like a new box and poorly made to me

Then I hope that the tubes were made better than the box.

 

[BinaryMike]

I believe the cut tabs were intended to mark tubes that were sold as surplus, so they couldn't be returned to a distributor for credit.