Date: Approximately 1910. Picture from a Conn postcard
The above picture is from an original Conn postcard someone sent me a scan of. At the time Conn had picture postcards of its instruments. The postcard as far as I know is undated, but the "New Invention" name of the instrument tells me it was probably made sometime in the period of approximately 1905 to 1915. It does not appear in the 1919 catalog. So all I know about it is what can be seen in the picture: bell up, front action four valves.