The only time I've ever heard of ol' number 12 having a whistle that wasn't it's original Baldwin 3 chime is this one instance of it having a 5 inch Crosby 3 chime due to it's Baldwin 3 chime supposedly being out for repairs. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uSaPgD3wvTg.html