Vintage Ringling Bros and Barnum & Bailey Combined Shows envelope with RBBB cachet.  The cachet indicates an address of 633 Plymouth Court, Chicago.  The envelope is postmarked February 29, 1940.

The envelope has been used and includes a postmark dated February 29, 1940.  The envelope has some browning from the glue.  The stamp is no longer on the envelope.  The envelope was cleanly cut open at the top.