MTH 6200 with LocoSound #30-1241-0

Yes,  MTH engines with LocoSounds have synchronized smoke and chuff and a form of speed control.  G

Thank You so much. I Thank You

That set may be 'new' in a sealed box but it was produced around 2000.  It is definitely loco sound.  I reviewed the instruction booklet and it says nothing about what type of sounds it makes other than Loco sound which is a poor second to PS-2 sounds.  You may want to listen to it before purchase if possible, especially at higher speeds.  Loco sound can sound like a machine gun at higher speeds.  It also has speed control which is a neat feature of Loco sound engines.  Go to MTH web site and type in the product number and then click on the booklet in the upper right to see the set instructions.  It will definitely smoke.  

The other number(30-1241-0) is just for the engine around 2002, also Loco Sound and that does say it has chuffing and smoke.  I would assume both engines are the same. 

Best of luck with your decision.