Whistle Mysteries 11: K&L NYC Niagara

This is the biggest complex and impossible to solve was K&L NYC Niagara 6 chime whistle. Many believed that it was NKP 765 (C&O 2765). However, It was unlikely that the whistle chords are different. But, I don't know if it's C&O 614 (Western 6 Chime), SP 6 chime, or not?
(Footage by: njt5140)

[@SouRwy4501Productions]

The NYC Niagaras didn’t have 6 chimes. They had Hancock long-bell 3 chimes just like the ones on N&W J class northerns. I’ve heard one in person, and it was one of the best sounding whistles (other than Southern Railway 3 chime whistles) that I’ve ever heard.

[@SuperFoxyRailwayProduction6702]

It kinda sounds like a ATSF 6 Chime whistle from the Cass Scenic Railroad

[@daniko4447]

Unfortunately there isn't any audio evidence of Niagara's whistle (yet) but I heard they used Hancock 3 chimes
Edit Oct 8: I found an audio of it!!!

[@daniko4447]

I saw on a website that shared it's notes, I need to find it

[@daniko4447]

Found it, A, C and E (long bell whistle)

[@daniko4447]

ua-cam.com/video/ur_t-cvLgEU/v-deo.htmlsi=KNsfUddTuwEwUWzy