All About Pocket Knives

Serpentine Jack pattern # 422438 over a larger 75. Punch marked Made in USA Pat Apr25-05.
What is the larger 75 below the pattern number. Old knife is 3 7/8" long closed. Punch is short.

Thanks Stockman

That's a nice knife and a rare blade configuration.
Robeson used various suffixes to their pattern numbers to denote a departure from the standard.

I've seen, 1/4, 1/2, 1-4, 1-2, 25, 50, 75, 100, 125, 150 etc.

I know what some of them mean, but not all.

Evidently, in the case of your knife, 75 indicates the addition of a punch blade instead of the usual pen blade.

Charlie Noyes

Thanks Charlie. I knew you would have the answer.

Stockman

Great lookin knife, as its well known here I love all Robesons.