D6 identification

Hello everyone , in my coutry is a D6 for sale with the serial number 1T 3038 . Well , during the years I have never heard off a 1T D6 .
In the serial numer book of 1986 I found the 1T D6 came out with the numbers 1T 3000 up . To my surprise the numbers 1T 0 to 3000 belonged to D7's .
Both machines were mentioned D6A and D7A , but I think this is a mistake and could be SA .
Can anyone tell more about these machines and when they were made ?
The picture shows the machine and what I see is a 5R or an early 9U .
Thanks in advance . Johan7[attachment=59566]D6 1T 3038 .jpg[/attachment]

Military production contract during WW2 ??

4T's were military D7's, That my be one of the truly rare D6's made for military! There was a serial number that was known to no longer exist.

1T D6's s/n 3001 to 1T3045 were produced for the military (armored) in 1943 only and would be considered extremely rare today.

Sounds like you need to snap it up Johan!

That is the one, thanks Mag.

Looks pretty much like a 4R or 5R from the setup in my view. At least, when I look at my 5R from that side, it looks pretty much like that.