Hi
Here are the pictures of the 1955 box for a 5 inch that was shipped in 1962, your gun was shipped in Aug 8 1960 so it would have been the correct box for a gun shipped in 1960.
The 1955 would have been over written with a black marker and changed to 1950. you will see where my box has been over written with a 5 because the box is for a 6 1/2 inch gun.
your gun would have used the same 6 1/2 inch box..
I hope this helps.
Jim Fisher