not sure if this is the right forum, if not pls let me know. picked this up today for the tooling I have and will be collecting for my new mill. wondering if anyone has any insight on the year it was made by the pic of the serial number. I have an old Snap-on box for my lathe tooling but the date is clearly stamped on the back (in this case 1964). not so with the MAC boxes. I spent a couple hours online this afternoon googling and read a ton of threads along these lines and none actually had an answer on the older serial numbers. could be 1965, could be 1974, could be something else. no earth shattering reason I need to know but if anyone has the answer I would be pleased to find out. thanks!