[Delco Remy K-33 Dual Trumpet Horn]

Also what do the markings 1857 and 1858 mean? Pictures in this album below(not working on the forum)

 

Markings:
https://imgur.com/LtYyK2K

Horns:
https://imgur.com/sFruSTN
Delco Remy:

https://imgur.com/lxjSctB

K33 stamp:
https://imgur.com/heqHdNx

[Delco Remy K-33 Dual Trumpet Horn]

Hello! Got this dual set of Delco Remy K-33 Dual Trumpet horns.

 

Wondering if you can give any an all info on these horns, and how to get them working! They are super cool but I know nothing about them. Wondering value, what kind of power it needs to make it go, and anything else!