You are correct - the original 400 series was solid Sitka and solid Mahogany, with a satin finish all around. This was Taylor's first entry into the sub-grand market (before the more familiar 300 and 400 series), probably to compete with Martin's 1 series. Structurally it was the same as a 500, albeit with cosmetically lower-grade woods, along with a rosewood fretboard and a rosewood pinless bridge. It was an excellent deal.
