It is an electronically generated "Chuff" sound. This model of engine was VERY heavy, somewhat slow by design and a bit of a loud "growler". It requires a powerful transformer like a ZW to run well. Looks to have been test run.
We have tested this engine for operation and sound. This is a large, heavy box. As it has not been used in many years we recommend lubrication of motor, gears and axle bushings before use.
Diecast boiler, frame and tender body. Mighty Sound of Steam with Whistle. Puffing smoke unit (these smoke units do not produce a lot of smoke).
Photos: These are photos of the actual item unless noted on the photo. I've tried to show the condition as best I could in the photographs, however the photos can't cover every square inch in magnified detail.Please examine the photos carefully. Not all items can efficiently packed together due to size and/or shape. Feedback: We appreciate your leaving Feedback and we will do the same for you. Due to sales volume we leave Feedback about every one to two weeks.
We will usually respond within 24 Hours. The item "Lionel 6-8406 New York Central NYC 4-6-4 Hudson #783 Semi-Scale Steam 1984 C9" is in sale since Monday, October 21, 2019. This item is in the category "Toys & Hobbies\Model Railroads & Trains\O Scale\Locomotives".The seller is "sherwinski" and is located in Allen, Texas. This item can be shipped to United States.