Cancel for March 12: S. C. L. & Company

Scott R184 1 Dollar Documentary

S.  C.  L.  & CO.

MAR  12  1902

CHICAGO.

Not sure what these initials stand for.  This site has many images of railroad cancels, and among those SCL would stand for the Seaboard Coast Line Railroad, which ran along the Atlantic coast.  SCL & Company must have been a brokerage firm.