Am trying to find out more information about a uniform I have. It has WWI era collar devices, New York National Guard (or Militia?) buttons (with the backmark Ridabock Co, New York). The uniform itself looks to be immediately post Span Am War to me. Anybody have any other opinions on the uniform as to age and attribution with the NY buttons?I did research on the internet and could find nothing and Albert's button book does not list this backmark for NY buttons.