The 1449 was the first iteration of the 'upscale' version of the uber-popular 1448. Longer scale, extra pickup, extra controls made necessary by that extra pickup, and a more powerful amp with a larger speaker and tremolo included in the combo. The black with sparkles paint scheme was seen as a bit too similar to the 1448, though, and the guitar was re-designed with a red/black burst and a pickguard that surrounded the rhythm pickup, and dubbed the 1457.
1449 Schematic / Manual
External link to 1449 Classic Reissue from Samick / Silvertone