That second Browns Pennant that you posted is fantastic as well. It is part of a rare series, circa 1951. There have been a few threads here, regarding this terrific series of pennants.
Mine are stashed away for the most part, but I know Greg M has most of this set, and can possibly post some pics of the other teams (from his great collection). My pics would come out sideways, anyway.
I think Greg and I are both missing the Cardinals version, but possibly have all the rest. For the record, I believe your Browns version to be the second rarest within the entire set... second only to the Cardinals. Cool graphics, and a truly rare piece!