Toccata d-moll

A lot of the contributers on CB are digging up unknown music all the time while I'm always clankin' away at the bloody obvious. Feeling not in touch with the present time, I thought I'd find me a rarely heard of piece of my own, so I went through my pile of organ rubbish and found one that must be VERY hard to trace down.
At least I never heard it before. Not that THAT accounts for much!
I tried to trace it down in Strumpfelreiter's “Kleine Geschichte der Deutschen Orgelmusik” (24 volumes) but could not find it. So it must be something by Mr. Anonymous, who seems to have written quite a lot!
If any of you guys (or gals) have a clue, please help me out, even if all you can do is present just an educated guess!
Oh incidentally:
There will be NO Authentic Fingering and NO Authentic Baroque Interpreting in this recording.
I played it with all the fingers, toes and heels I have got.
I just want the organ to sound pretty.
As for Authentic Baroque Interpretation:
When asked how to interpret a famous Bach piece during a seminar, Ton Koopman (the leading expert in this field) said: “From the sources you can prove anything!”
Wise words!