Dennis,
Going from what I can gather from my old speed equip. catalogs, all the 800 "series" Super tachs were fully transistorized, regardless of max rpm. The one pictured is model 801, which was the 10K tach. The catalog pictures of the 700 series tach (which required the sender) doesn't say SUPER tach on the face. The '69 catalog mentions the newly designed 270' circle and red needle for better viewing (that's on the 800 series). The description doesn't mention a changed face on the 700 series. I have a hunch that the color band doesn't necessarily mean it needs a sender or not. Just going by what the catalog blurb says. I could be wrong.
