M809 series and their build years

[319cssb]

I kind go hijacked my own thread with this question. So I'll post it again in a new thread.
I was looking at the M809 serie and Wiki tells me that they were build until 1982 then the new 5 ton M939 came on. When I googled them I saw some as high as 1985.
So I am wondering until what year has the M809 series been build?
https://en.wikipedia.org/wiki/M809_series_5-ton_6x6_truck

 

[doghead]

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