Go get em .
He wants you to have them and know they are in your care.

We all have heard the stories, I'm sure he has also.
He wants a peice of mind passing em on to you.
Let him have that peice of mind while he is still alive.
He is reaching out to you to have them now.
Do it so it aint an unspoken issue for either of you. Dont let it become uncovered ground.

No other way to put it.

Consider it an honor with diginity he is wanting to accomplish.