Hazet 450 logo comparison

There were subtle changes over the years in how "Hazet 450" was marked on the wrenches. Here are written descriptions, and a picture showing these 5 varieties (in the same order as the descriptions):

1950-56: letters "azet" underlined with an elongated L shape.

1957-59?: letters "azet" underlined by straight line.

1959?-60's?: same as 1957-59? but more space in the "frame" to either side of "Hazet 450".

mid 1960's and later: all letters in name "HAZET" are capitals, underlined with straight line (never in 356 kit).

1950's: letters "azet" lower case, underlined with elongated "U" shape (never in 356 kit).

Other changes over the years:
-how the sizes were marked - either stamped or molded (see 8x9 description on previous page)
-polished ends - mid to late 1960's?
-slightly polished or "buffed" finish all over the wrench

I don't have enough samples to determine when these changes occurred, but since they were after their use in 356 tool kits, it is not of great interest to me.

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