![American Flyer Whistle 577](https://traindr.wpenginepowered.com/wp-content/uploads/2016/06/American-Flyer-Whistle-577-2.jpg)
![American Flyer Whistle 577](https://traindr.wpenginepowered.com/wp-content/uploads/2016/06/American-Flyer-Whistle-577-2.jpg)
![American Flyer Whistle 566](https://traindr.wpenginepowered.com/wp-content/uploads/2016/06/American-Flyer-Whistle-566-2.jpg)
American Flyer Whistle 566
Recommended...![American Flyer Two Tone Whistle & Billboard 562](https://traindr.wpenginepowered.com/wp-content/uploads/2016/06/American-Flyer-Two-Tone-Whistle-Billboard-562-2.jpg)
American Flyer Two Tone Whistle & Billboard 562
Recommended...![American Flyer Two-In-One Whistle 762](https://traindr.wpenginepowered.com/wp-content/uploads/2014/05/American-Flyer-Accessory-762-Whistle.jpg)
American Flyer Two-In-One Whistle 762
Gilbert produced the American Flyer Accessory 762 2 in 1 Whistle and cataloged it in the 1949 and 1950 catalogs. The whistle was unique as it featured two separate whistles with two buttons.
![American Flyer Whistle 568](https://traindr.wpenginepowered.com/wp-content/uploads/2014/03/35.jpg)
American Flyer Whistle 568
The 568 whistle was produced in 1956 and had a green plastic base. The whistle was different from earlier years as Gilbert continued to move towards plastic materials.
![Gilbert American Flyer Number 577 Whistling Billboard](https://traindr.wpenginepowered.com/wp-content/uploads/2014/03/American-Flyer-Accessory-577-Whistling-Billboard.jpg)
Gilbert American Flyer Number 577 Whistling Billboard
The 577 whistle was produced in 1947 through 1950 and had a green metal base. The whistle was different from later years as Gilbert began to move towards plastic materials.