Need help identifying this button with 2 horses on it

[TheButtonKing]

Hi,
I need help on iding this button I found awhile back and I just can't figure it out because I've been trying to figure it out for the last 2 weeks and just haven't got an id on it. The Backmark is Horstmann Philadelphia. Thanks for looking! ~TheButtonKing

Heres some pics:

 

Amazon Forum Fav 👍

Cry Of The Eagle: History And Legends Of The Cherokee Indians And Their Buried Treasure - Grab it through Amazon!

[nhbenz]

That's the state seal of Pennsylvania
Couple variations here: Ridgeway Civil War Archive Buttons from Pennsylvania

 

[Dug]

That backmark was in use from 1893-1947. (McGuinn& Bazelon)