Seco 990 Color Generator looking for a manual and schematic
 

Does anyone have a copy of the manual or schematic for the Seco 990 Color Signal Generator they'd sell or email to me? I looked on google and the bama archive, I came up with very little other than a couple old ads in magazines.

Any opinions or additional info on this thing? I got it with a lot of TV/Radio test equipment, tubes and other parts I bought, it's in very nice condition but doesn't seem like it was a very popular unit.