Non-A Sparton horn id help

[Sparky]

I restored this horn over the winter. It’s a Sparton model AU dated 1923. I plan to use it on my speedster, I am curious if anyone knows which cars would have used it originally.

 

[Mike V. Florida]

Could have been any number of cars from the '20's.

 

[DHZIEMAN]

I restored this horn over the winter. It’s a Sparton model AU dated 1923. I plan to use it on my speedster, I am curious if anyone knows which cars would have used it originally.

Here is something interesting to read! Did a Google and this popped up!
Hope it helps..........

https://www.mafca.com/downloads/Member_Stories/2009-5_Sparton Story Only.pdf

 

[Sparky]

Interesting, thanks!