Help with Cavalry Insignia 'ST'

[gap]

Need assistance with this prong back cavalry hat insignia.

 

Do the letters ST signify Second Troop? What time period?  Was this for a private orginazation?

 

[QED4]

Troops are not given numbers they use letters so not second troop. This is most likely either a militia unit that was given a name and ST are the initials or it is a military school or ROTC and ST stands for the school name. 

 

[CAC1901]

This style of prongback is associated with being a collar device for state guard, militia, or quasi-military organizations (military schools for example). Its a nice quality made example that appears to be lead filled using a regular army 1872 cavalry insignia device. My instinct says this was made probably in the 1890's to 1910 period. What ST stands for - who knows!  

[Major Z]

Perhaps it refers to a Service, or maybe Supply Troop? There used to be "S" companies with Infantry, Artillery, Cavalry, etc. Most typically you'll see that indicated on a collar disc. Nowadays they're called Forward Support Companies. I commanded one: E Co, 2-1 General Support Aviation Battalion, 1st Combat Aviation Brigade.

[B-17Guy]

It is actually none of the above.

It stands for “Sheridan Troop”.

ST is part of the Pennsylvania NG, 104th Cavalry.

Your M1905 insignia dates from when they were assigned to Squadron B in 1910.

Hope that helps, John

[KurtA]

45 minutes ago, B-17Guy said:

It is actually none of the above.

It stands for “Sheridan Troop”.

ST is part of the Pennsylvania NG, 104th Cavalry.

Your M1905 insignia dates from when they were assigned to Squadron B in 1910.

Hope that helps, John

Great info.  Always wondered what that meant.