US: US Army specialist patches from early 20th century.

Very nice collection of US Army specialty and rank patches circa 1900 thru WWI.  About 48 pieces with specialties including Engineers, Aviation, Ordnance, Transportation, Music, Tank Corps, Cavalry, Construction, Mine Service, Bugler, Farrier, Infantry, Medical, Signals, Administation, etc.  A many year accumulations of some specialties that are flat rare.   Comes to about $17.00 each patch.  Cheap!