NOS Steering Sector - What Year ?

[FL&WVMIKE]

I have this NOS Genuine Ford Steering Sector, but I am confused as to the year. I am hoping that some Fordbarners know more than I do about it.
Using the Green Book, I thought that I could figure it out, but it is confusing.
The things that are confusing are;
..... There are two Part Numbers for 1933-1934. One for a 13-1 Ratio and one for a 15-1 Ratio.
..... 1935 has it's own Part Number.
..... 1936 has it's own Part Number.
..... The big trucks have their own Part Numbers.
Can anyone recognize which sector this is ?
Thank you,
MIKE (mikeburch)
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