This is what I know. Scovil Waterbury.Aprox. 1/2 in.Dia. (Front) Eagle,olive branch in right talon,arrows in left,Stars suround outer edge,Flat top shield, background lined.(back) Scovil waterbury,Dots around loop.
looks like an extended rim around the outside...that typically indicates staff...since this has shield on chest, it appears to be a general staff button...which one exactly I can't tell... might try looking at the picketpost or google Daniel Binder and send him a pic....he's a guru on CW buttons