
What a great knife to have, that is as a gift from your grandpa!
Just guessing I would say the knife is a 6232 but we really need to know the closed length to be sure. Also a close up of the tang stamp or stamps on the blades. I kinda' wonder if the knife has been apart at some time in the past? The large blade should tell what era it came from if it still has a Case blade, just can't make it out in the pic.

Treefarmer