Need Help with a ID on a small Military Button

[lonelyduckhunter]

Found this button at a old military academy site that burnt down in the mid 1800s. Can anybody help me id it and the age. Thanks in advance. Sorry bout the poor pictures but my camera is awful. Button is smaller then a penny and can barley make out the writing but can see some letter on the back something along these lines "philadelphia hortsmann" plus some more writing hard to make out but some of of my letters could be mistaken. I know philadelphia is there but not sure if the other word is correct

 

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[vayank54]

It's a great seal button. the army started using them in 1902. Your's looks to date about WWI The Horstmann Philadelphia backmark was used from the 1890's to the 1940's

 

[Iron Patch]

It's a great seal button. the army started using them in 1902. Your's looks to date about WWI The Horstmann Philadelphia backmark was used from the 1890's to the 1940's

If we only had a nickel!

 

[kuger]

It's a great seal button. the army started using them in 1902. Your's looks to date about WWI The Horstmann Philadelphia backmark was used from the 1890's to the 1940's

If we only had a nickel!

No kidding!!

 

[Bigcypresshunter]

green check please