OEM tool ?

[3_puppies]

found an adjustable wrench sat at a yard sale. it matches the one in my 67 tool roll and another from a 65.
the question is when did the name change? older ones say Toyota Motor the ones from the 60 series tool set just say Toyota.
the newer ones have a different color to them than the older ones

 

[3_puppies]

also found some changes in the open end wrenches. I think the earliest ones say Toyota Motor set in an indent, next would be Toyota Motor , and from the 60 series just say Toyota on a raised bed
then on the back side the earlier one is nickel-chrome-vanadium set in an indent, next would be nickel-chrome-vanadium, and the 60 series wrench has special alloy on a raised bed.
just curious what the year ranges might be??