This is an Atlas Classic, Model #8865, HO Scale, Northern Pacific RS-1 locomotive, Road #803. � It comes with the original box. I would describe the condition of this loco between excellent and like new. � I have upgraded this unit by installing a Tsunami sound decoder. � It is model number TSU-AT1000 with the ALCO 539 Turbo digital sound module. I have added sunny white LED's for the headlights, drilled out the smoke stack and placed Engineer Ed and Fireman Fred in the cab. � The speaker is located under the front fan grills with the cone facing outward and the magnet side facing toward the front trucks. � This gives a double WOW on the digital sound you hear. � The unit has been tested and sounds and runs very well. � The loco is set to address 3. � I will send the Tsunami paperwork with the loco in the box. � Please email if you have any questions.